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{{short description|American counterintelligence program during World War II and Cold War}}
'''The VENONA project''' was a long-running and highly secret collaboration between ] ] and the ]'s ] that involved the ] of messages sent by several ] intelligence agencies. The British codename for VENONA was '''Bride'''. In the early years of the ], it was one of the West's most important sources on Soviet intelligence activity.
{{redirect|Venona|the place in Roman Britain|Venonae}}
{{Use mdy dates|date=March 2023}}
{{Use American English|date=March 2023}}

The '''Venona project''' was a United States ] program initiated during World War II by the United States Army's ] and later absorbed by the ] (NSA), that ran from February 1, 1943, until October 1, 1980.{{sfn|Benson|2001|pp=7-8}} It was intended to decrypt messages transmitted by the ] of the ] (e.g. the ], the ], and the ]).{{sfn|Benson|2001|p=5}} Initiated when the Soviet Union was an ally of the US, the program continued during the ], when the Soviet Union was considered an enemy.

During the 37-year duration of the Venona project, the Signal Intelligence Service decrypted and translated approximately 3,000 messages.{{sfn|Benson|2001|p=14}} The ] yield included discovery of the ] espionage ring in the United Kingdom,{{sfn|Benson|2001|p=34}} and also of Soviet espionage of the ] in the US,{{sfn|Benson|2001|pp=20-22}} known as Project Enormous. Some of the espionage was undertaken to support the ].<ref>{{Cite web |last=Benson |first=Robert L. |title=The Venona Story |url=https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/venona_story.pdf |access-date=November 9, 2024 |website=www.nsa.gov |page=1}}</ref> The Venona project remained secret for more than 15 years after it concluded. Some of the decoded Soviet messages were not ] and published by the United States until 1995.<ref>{{Cite web |title=Venona: Soviet Espionage and The American Response, 1939-1957 - CSI |url=https://www.cia.gov/resources/csi/books-monographs/venona/ |access-date=2024-11-09 |website=www.cia.gov}}</ref><ref>{{Cite web |title=Venona Documents |url=https://www.nsa.gov/Helpful-Links/NSA-FOIA/Declassification-Transparency-Initiatives/Historical-Releases/Venona/ |access-date=2024-11-09 |website=www.nsa.gov}}</ref>


==Background== ==Background==
During World War II and the early years of the ], the Venona project was a source of information on Soviet intelligence-gathering directed at the Western military powers. Although unknown to the public, and even to ] ] and ], these programs were of importance concerning crucial events of the early Cold War. These included the ] spying case (which was based on events during World War II) and the defections of ] and ] to the ].


Most decipherable messages were transmitted and intercepted between 1942 and 1945, during World War II, when the Soviet Union was an ally of the US. Sometime in 1945, the existence of the Venona program was revealed to the Soviet Union by ]-analyst ], an ] agent in the US Army's ].<ref>
] (commonly called ]) codebreakers had intercepted large volumes of ] high-level ] diplomatic and intelligence traffic during and immediately after ]. The British had stopped intercepting Soviet traffic, at ]'s orders, shortly after Germany invaded the Soviet Union in 1941, and had no traffic to contribute to the project after that time.
{{cite book
| last = Andrew
| first = Christopher
| year = 1996
| url =https://archive.org/details/forpresidentseye00andr
| url-access = registration
| title = For the President's Eyes Only: Secret Intelligence and the American Presidency from Washington to Bush
| publisher = Harper Perennial
| isbn = 978-0-06-017037-0
}}</ref> These messages were slowly and gradually ] beginning in 1946. This effort continued (many times at a low level of effort in the latter years) through 1980, when the Venona program was terminated. The analyst effort assigned to it was moved to more important projects.


To what extent the various individuals referred to in the messages were involved with ] is a topic of minor historical ]. Most academics and historians have established that most of the individuals mentioned in the Venona decrypts were probably either clandestine assets and/or contacts of Soviet intelligence agents,<ref>''How VENONA was Declassified'', Robert Louis Benson, ''Symposium of Cryptologic History;'' October 27, 2005.</ref><ref>"Tangled Treason", ], '']'', 1999.</ref> and very few argue that many of those people probably had no malicious intentions and committed no crimes.<ref name="ghosts"/><ref name=decrypts>"Tales from decrypts," ''The Nation'', 28 October 1996, pp. 5–6.</ref><ref>{{cite web|url= http://www.fas.harvard.edu/~hpcws/comment15.htm|title= Comments on John Earl Haynes', "The Cold War Debate Continues: A Traditionalist View of Historical Writing on Domestic Communism and Anti-Communism"|access-date= 2006-06-27|last= Schrecker|first= Ellen}}</ref>
This traffic, some of which was thought to be encrypted with a ] system, was stored and analyzed in relative secrecy by hundreds of cryptanalysts over a 40-year period starting in the early ]. Due to what turned out to be a serious blunder on the part of the Soviets - re-using pages of some of the one-time pads in other pads, which were then used for other messages - this traffic was vulnerable to crypanalysis.


===Commencement===
The Venona Project was initiated under orders from the Chief of Military Intelligence, Carter Clarke, who mistrusted ]. He feared that Stalin and ] would sign a peace treaty in order to focus Germany's military forces on the destruction of Great Britain and the U.S.
], the first ] of the Venona project<ref>{{cite web|title=Remembrances of Venona |first=William P.|last=Crowell |url=http://www.nsa.gov/public_info/declass/venona/remembrances.shtml|publisher=nsa.gov|date=11 July 1995 |access-date=7 February 2016|archive-url=https://web.archive.org/web/20160305204040/https://www.nsa.gov/public_info/declass/venona/remembrances.shtml|archive-date=5 March 2016}}</ref>]]


The VENONA<ref name="cia.gov/csi/books/venona/preface">{{cite web |title=Venona: Soviet Espionage and the American Response, 1939-1957 |website=] |url=http://www.cia.gov/csi/books/venona/preface.htm |access-date=8 August 2022 |archive-url=https://web.archive.org/web/20000816212523/http://www.cia.gov/csi/books/venona/preface.htm |archive-date=16 August 2000 |quote=Meredith Gardner kept his British counterpart abreast of developments, and from 1948 on there was complete and profitable US-UK cooperation on the problem. The control term "Venona" did not appear on the translated messages until 1961. In the beginning the information was usually called the "Gardner material," and a formal control term "Bride" was finally affixed in 1950. From the late 1950s to 1961 the control term was "Drug".}}</ref><ref>{{harvnb|Benson|2001|p=59}}: "VENONA was the final NSA codeword for this very secret program. Earlier codewords had been JADE, BRIDE, and DRUG."</ref> Project was initiated on February 1, 1943, by ],{{sfn|Benson|2001|p=1}} an American mathematician and ], under orders from Colonel ], Chief of Special Branch of the ] at that time.<ref name=Gilbert1993>{{cite book|title=U.S. Army Signals Intelligence in World War II: a documentary history |chapter=Accepting the challenge|page=48 |publisher=]|location=Washington, DC |year=1993|isbn=978-0-16-037816-4|editor-last=Gilbert |editor-first=James Leslie|editor2-last=Finnegan|editor2-first=John Patrick}}</ref> Clarke distrusted ], and feared that the Soviet Union would sign a ] with ], allowing Germany to focus its military forces against the United Kingdom and the United States.<ref>{{cite book |url=https://www.nytimes.com/books/first/h/haynes-venona.html |author=John Earl Haynes |author2=Harvey Klehr |year=1999 |publisher=Yale University Press |chapter=Venona |title=Venona – Decoding Soviet Espionage in America |via=] Books |access-date=2014-02-15}}</ref> Cryptanalysts of the US Army's Signal Intelligence Service at ] analyzed encrypted high-level Soviet diplomatic intelligence messages intercepted in large volumes during and immediately after World War II by American, British, and Australian listening posts.{{sfn|Modin|1994|p=194}}
==The breakin==


==Decryption==
The Soviet systems in general used a ] to convert words and letters into numbers, to which an additive ] (from one-time pads) were added, further disguising the content. Some brilliant ] by American and British codebreakers revealed that some of the one-time pad material had incorrectly been reused by the Soviets (specifically, entire pages, although not complete books), which allowed decryption (sometimes only partial) of a small part of the traffic.
This message traffic, which was encrypted with a ] system, was stored and analyzed in relative secrecy by hundreds of cryptanalysts over a 40-year period starting in the early 1940s. When used correctly, the one-time pad encryption system, which has been used for all the most-secret military and diplomatic communication since the 1930s, is unbreakable. However, due to a serious blunder on the part of the Soviets, some of this traffic was vulnerable to cryptanalysis. The Soviet company that manufactured the one-time pads produced around 35,000 pages of duplicate key numbers, as a result of pressures brought about by the German advance on Moscow during World War II. The duplication—which undermines the security of a one-time system—was discovered, and attempts to lessen its impact were made by sending the duplicates to widely separated users.<ref> {{webarchive|url=https://web.archive.org/web/20160304100650/https://www.nsa.gov/public_info/_files/crypto_almanac_50th/VENONA_An_Overview.pdf |date=2016-03-04}}. Released by NSA on 06-12-2009, FOIA Case # 52567.</ref> Despite this, the reuse was detected by cryptanalysts in the US.


===Breakthrough===
It was Arlington Hall's Lt. ], working on Soviet "Trade" traffic, who first discovered that the Soviets were re-using pages. Hallock and his colleagues (including Genevieve Feinstein, ], Frank Lewis, Frank Wanat, and Lucille Campbell) went on to break into a significant amount of "Trade" traffic, recovering many one-time pad additive key tables in the process.
]<ref>{{cite web|url=http://www.nsa.gov/about/cryptologic_heritage/women/honorees/feinstein.shtml |title=Women in Cryptologic History – Genevieve Feinstein – NSA/CSS |publisher=Nsa.gov |date=2009-01-15 |access-date=2014-02-15}}</ref>]]
The Soviet systems in general used a ] to convert words and letters into numbers, to which additive ]s (from one-time pads) were added, encrypting the content. When used correctly so that the ] is of a length equal to or less than that of a random key, one-time pad encryption is unbreakable.<ref>{{cite web |url=http://www.world.std.com/~franl/crypto/one-time-pad.html |archive-url=https://web.archive.org/web/20080516225512/http://www.world.std.com/~franl/crypto/one-time-pad.html |archive-date=2008-05-16 |title=Why Are One-Time Pads Perfectly Secure? |author=Francis Litterio}}</ref> However, cryptanalysis by American code-breakers revealed that some of the one-time pad material had incorrectly been reused by the Soviets (specifically, entire pages, although not complete books), which allowed decryption (sometimes only partial) of a small part of the traffic.


Generating the one-time pads was a slow and labor-intensive process, and the outbreak of war with Germany in June 1941 caused a sudden increase in the need for coded messages. It is probable that the Soviet code generators started duplicating cipher pages in order to keep up with demand.
A very young ] (of what would become the ]) then used this material to break in to what turned out to be ] (and later ]) traffic, by reconstructing the code used to convert text to numbers. Samuel Chew and Cecil Phillips also made valuable contributions. Very slowly, using assorted techniques ranging from traffic analysis to defector information, more of the messages were decrypted.


It was Arlington Hall's Lieutenant ], working on Soviet "Trade" traffic (so called because these messages dealt with Soviet trade issues), who first discovered that the Soviets were reusing pages. Hallock and his colleagues, amongst whom were ], ], ], ], and ], went on to break into a significant amount of Trade traffic, recovering many one-time pad additive key tables in the process.
Claims have been made that information from physical theft of code books (a partially burned one was recovered by the Finns) to bugging embassy rooms in which text was entered into encrypting devices (analyzing the keystrokes by listening to them being punched in), contributed to achieving as much plaintext as was recovered. These latter claims are less than fully supported in the open literature.
] (far left); most of the other code breakers were young women.]] <!-- yes, Meredith's a man -->
A young ] then used this material to break into what turned out to be NKVD (and later ]) traffic by reconstructing the code used to convert text to numbers. Gardner credits ], a linguist with the ] with making some of the initial recoveries of the Venona codebook.<ref>{{Cite web|url=https://www.nsa.gov/About-Us/Current-Leadership/Article-View/Article/1620935/marie-meyer/|title=Marie Meyer > National Security Agency {{!}} Central Security Service > Article View|website=www.nsa.gov|access-date=2019-11-21}}</ref> ] and Cecil Phillips also made valuable contributions. On December 20, 1946, Gardner made the first break into the code, revealing the existence of Soviet espionage in the ].<ref>
{{cite web
| author = Daniel Patrick Moynihan
| author-link = Daniel Patrick Moynihan
| year = 1997
| url = https://fas.org/sgp/library/moynihan/appa6.html
| title = Report of the Commission On Protecting And Reducing Government Secrecy; Appendix A: The Experience of The Bomb
| publisher = United States Government Printing Office
| access-date = 2006-06-18
}}</ref> Venona messages also indicated that Soviet spies worked in Washington in the ], ], ] (OSS), and even the ]. Very slowly, using assorted techniques ranging from ] to ] information, more of the messages were decrypted.


Claims have been made that information from the physical recovery of code books (a partially burned one was obtained by the Finns) to ] embassy rooms in which text was entered into encrypting devices (analyzing the keystrokes by listening to them being punched in) contributed to recovering much of the plaintext. These latter claims are less than fully supported in the open literature.
One significant aid (mentioned by the NSA) in the early stages may have been work done in co-operation between the Japanese and Finnish cryptanalytic organizations; when the Americans broke into Japanese codes during WWII, they gained access to this information.


One significant aid (mentioned by the NSA) in the early stages may have been work done in cooperation between the ]ese and ] cryptanalysis organizations; when the Americans broke into Japanese codes during World War II, they gained access to this information.<ref>{{Cite book |last=Mundy |first=Liza |title=Code girls: the untold story of the American women code breakers of World War II |publisher=Hachette Books |year=2017 |isbn=978-0-316-35253-6 |edition=1st |location=Boston |page=38}}</ref> There are also reports that copies of signals purloined from Soviet offices by the ] (FBI) were helpful in the cryptanalysis. The Finnish radio intelligence sold much of its material concerning Soviet codes to the OSS in 1944 during ], including the partially burned code book.<ref>{{ cite book
There has been speculation that the reason for the key material duplication was the increase in work (including key pad generation) in the period after the German attack in June of 1941. Other suggestions have it that it was ]'s tanks just outside Moscow in early December that year which forced Moscow Centre to make such a fundamental error.
| last = West
| first = Nigel
| title = Venona: the greatest secret of the Cold War
| publisher = HarperCollins
| year = 2000
| location = London
| pages = 3–10
| isbn = 978-0-00-653071-8
}}</ref>


==Results== ===Results===
The NSA reported that (according to the serial numbers of the Venona cables) thousands of cables were sent, but only a fraction were available to the cryptanalysts. Approximately 2,200 messages were decrypted and translated; about half of the 1943 GRU-Naval Washington to Moscow messages were broken, but none for any other year, although several thousand were sent between 1941 and 1945. The decryption rate of the NKVD cables was as follows:
* 1942: 1.8%
* 1943: 15.0%
* 1944: 49.0%
* 1945: 1.5%


Out of some hundreds of thousands of intercepted encrypted texts, it is claimed under 3,000 have been partially or wholly decrypted. All the duplicate one-time pad pages were produced in 1942, and almost all of them had been used by the end of 1945, with a few being used as late as 1948. After this, Soviet message traffic reverted to being completely unreadable.<ref>
The NSA reported that, according to the serial numbers of the Venona cables, thousands were sent, but only a fraction were available to the cryptanalysts. Approximately 2,200 of the messages were decrypted and translated; some 50 percent of the 1943 GRU-Naval Washington to Moscow messages were broken, but none for any other year, although several thousand were sent between 1941 and 1945. The decryption rate of the NKVD cables was:
{{cite book
|author1=Haynes, John Earl |author2=Klehr, Harvey
|name-list-style=amp |year = 2000
| title = Venona: Decoding Soviet Espionage in America
| publisher = Yale University Press
| page = 55
| isbn = 978-0-300-08462-7
}}</ref>


The existence of Venona decryption became known to the Soviets within a few years of the first breaks.<ref name="osti.gov">{{Cite web |title=Manhattan Project: The Venona Intercepts |url=https://www.osti.gov/opennet/manhattan-project-history/Events/1945-present/venona.htm |access-date=2023-10-10 |website=www.osti.gov}}</ref> It is not clear whether the Soviets knew how much of the message traffic or which messages had been successfully decrypted. At least one Soviet penetration agent, British ] representative to the US ], was told about the project in 1949, as part of his job as liaison between British and US intelligence.<ref name="osti.gov"/> Since all of the duplicate one-time pad pages had been used by this time, the Soviets apparently did not make any changes to their cryptographic procedures after they learned of Venona. However, this information allowed them to alert those of their agents who might be at risk of exposure due to the decryption.
* 1942 1.8%
* 1943 15.0%
* 1944 49.0%
* 1945 1.5%


===Significance===
Out of some hundreds of thousands of intercepted cyphertexts, it is claimed that under 3000 have been partially or wholly decrypted.
The decrypted messages gave important insights into Soviet behavior in the period during which duplicate one-time pads were used. With the first break into the code, Venona revealed the existence of Soviet espionage<ref>
{{cite book
| last = Moynihan
| first = Daniel Patrick
| year = 1998
| title = Secrecy: The American Experience
| url = https://archive.org/details/secrecyamericane00moyn
| url-access = registration
| publisher = Yale University Press
| page =
| isbn = 978-0-300-08079-7
}} "these intercepts provided ... descriptions of the activities of precisely the same Soviet spies who were named by defecting Soviet agents ], ], ] and ]."</ref> at the ].<ref>
{{cite web
|url = http://www.access.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf
|title = A Brief Account of the American Experience
|author = Commission on Protecting and Reducing Government Secrecy
|work = Report of the Commission on Protecting and Reducing Government Secrecy. VI; Appendix A
|publisher = US Government Printing Office
|pages = A–27
|access-date = 2006-06-26
|archive-url = https://web.archive.org/web/20110514040131/http://www.access.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf
|archive-date = 2011-05-14
}} "Thanks to successful espionage, the Russians tested their first atom bomb in August 1949, just four years after the first American test. As will be discussed, we had learned of the Los Alamos spies in December 1946—December 20, to be precise. The US Army Security Agency, in the person of Meredith Knox Gardner, a genius in his own right, had broken one of what it termed the Venona messages—the transmissions that Soviet agents in the United States sent to and received from Moscow."</ref> Identities soon emerged of American, Canadian, Australian, and British spies in service to the Soviet government, including ], ], and Donald Maclean. Others worked in Washington in the ], the Treasury, OSS,<ref>
{{cite web
|url = http://www.access.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf
|title = A Brief Account of the American Experience
|author = Commission on Protecting and Reducing Government Secrecy
|work = Report of the Commission on Protecting and Reducing Government Secrecy. VI; Appendix A
|publisher = US Government Printing Office
|pages = A–7
|access-date = 2006-06-26
|archive-url = https://web.archive.org/web/20110514040131/http://www.access.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf
|archive-date = 2011-05-14
}} "KGB cables indicated that the Office of Strategic Services (OSS) in World War II had been thoroughly infiltrated with Soviet agents."</ref> and even the White House.


The messages show that the US and other nations were targeted in major espionage campaigns by the Soviet Union as early as 1942. Among those identified are ], ], ] (the second-highest official in the Treasury Department), ]<ref>{{cite web
The Soviets eventually stopped reusing key pad material, possibly after learning of the US / British work from several of their agents, after which their one-time pad traffic reverted to completely unreadable.
| url = http://www.nsa.gov/about/_files/cryptologic_heritage/publications/wwii/eavesdropping.pdf
| title = Eavesdropping on Hell
| publisher = National Security Agency
| access-date = 2006-06-26
| archive-date = November 8, 2017
| archive-url = https://web.archive.org/web/20171108151305/https://www.nsa.gov/about/_files/cryptologic_heritage/publications/wwii/eavesdropping.pdf
| url-status = dead
}} "Currie, known as PAZh (Page) and White, whose cover names were YuRIST (Jurist) and changed later to LAJER (Lawyer), had been Soviet agents since the 1930s. They had been identified as Soviet agents in Venona translations and by other agents turned witnesses or informants for the FBI and ]. From the Venona translations, both were known to pass intelligence to their handlers, notably the ]."</ref> (a personal aide to Franklin Roosevelt), and ]<ref>{{cite web|last=Warner |first=Michael |year=2000 |url=https://www.cia.gov/csi/books/oss/art07.htm |title=The Office of Strategic Services: America's First Intelligence Agency; Chapter: X-2 |publisher=Central Intelligence Agency Publications |access-date=2006-06-27 |archive-url=https://web.archive.org/web/20060629114037/http://www.cia.gov/csi/books/oss/art07.htm |archive-date=June 29, 2006}}</ref> (a section head in the Office of Strategic Services).


The identification of individuals mentioned in Venona transcripts is sometimes problematic, since people with a "covert relationship" with Soviet intelligence are referenced by ]s.<ref>{{cite book
==Significance==
| last = Moynihan
<i>Main articles: ]
| first = Daniel Patrick
| year = 1998
| title = Secrecy: The American Experience
| publisher = Yale University Press
| page =
| isbn = 978-0-300-08079-7
| url = https://archive.org/details/secrecyamericane00moyn/page/54
}}</ref> Further complicating matters is the fact the same person sometimes had different cryptonyms at different times, and the same cryptonym was sometimes reused for different individuals. In some cases, notably Hiss, the matching of a Venona cryptonym to an individual is disputed. In many other cases, a Venona cryptonym has not yet been linked to any person. According to authors ] and ], the Venona transcripts identify approximately 349 Americans who they claim had a covert relationship with Soviet intelligence, though fewer than half of these have been matched to real-name identities.<ref>
{{cite book
|author1=Haynes, John Earl |author2=Klehr, Harvey
|name-list-style=amp |year = 2000
| title = Venona: Decoding Soviet Espionage in America
| publisher = Yale University Press
| page = 12
| isbn = 978-0-300-08462-7
}}</ref> However, not every agent may have been communicating directly with Soviet intelligence. Each of those 349 persons may have had many others working for, and reporting only to, them.


The OSS, the predecessor to the ] (CIA), housed at one time or another between fifteen and twenty Soviet spies.<ref>
The NSA followed Soviet intelligence traffic for only a few years in World War II, and decrypted only a small portion of that traffic. The Venona project was a thirty-eight year investigation conducted by the NSA and ] ], and held classified for an additional fifteen years after the program ended. Researchers, historians, and the public, struggle to understand its significance and meaning.
{{cite web
| last = Warner
| first = Michael
| year = 2000
| url = https://www.cia.gov/csi/books/oss/art07.htm
| title = The Office of Strategic Services: America's First Intelligence Agency; Chapter: X-2
| publisher = Central Intelligence Agency Publications
| access-date = 2006-06-26
| archive-url = https://web.archive.org/web/20070510011705/https://www.cia.gov/csi/books/oss/art07.htm
| archive-date = 2007-05-10 <!-- new URL: https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/oss/art07.htm -->
}}</ref> ], ], ], and Maurice Halperin passed information to Moscow. The ], the ], the ], and the ], included at least half a dozen Soviet sources each among their employees.


==Bearing of Venona on particular cases==
Senator ], Chairman of the ] ] was responsible for securing the release of Venona project materials. He wrote "The Venona intercepts contained overwhelming ] of the activities of Soviet spy networks in America, complete with names, dates, places, and deeds." (*).<sup id="fn_2_back">]</sup>
Venona has added information – some unequivocal, some ambiguous – to several espionage cases. Some known spies, including ], were neither prosecuted nor publicly implicated, because the Venona evidence against them was withheld.


=== "19" ===
==List of Americans in the Venona papers==
The identity of the Soviet source cryptonymed "19" remains unclear. According to British writer Nigel West, "19" was ], president of the ].<ref>Nigel West, Venona, największa tajemnica zimnej wojny, Warszawa 2006, p.138.</ref> Military historian Eduard Mark<ref>
: ''Main article: ]''
Eduard Mark. "Venona's Source 19 and the Trident Conference of May 1943: Diplomacy or Espionage?". Intelligence and National Security. London, Summer 1998, pp. 1–31</ref> and American authors Herbert Romerstein and Eric Breindel concluded it was Roosevelt's aide ].<ref>{{cite book
| author1 = Romerstein, Herbert
| author2 = Breindel, Eric
| name-list-style = amp
| year = 2000
| title = The Venona Secrets: Exposing Soviet Espionage and America's Traitors
| publisher = Regnery Publishing
| page =
| isbn = 978-0-89526-275-2
| url = https://archive.org/details/venonasecretsexp00rome/page/214
}}</ref> According to American authors John Earl Haynes and Harvey Klehr, "19" could be someone from the British delegation to the ] in May 1943.<ref>{{cite book
|author1=Haynes, John Earl |author2=Klehr, Harvey
|name-list-style=amp |year = 1999
| title = Venona: Decoding Soviet Espionage in America
| publisher = Yale University Press
| pages = 205–206
| isbn = 978-0-300-07771-1
}}</ref> Moreover, they argue no evidence of Hopkins as an agent has been found in other archives, and the partial message relating to "19" does not indicate whether this source was a spy.<ref>{{cite journal|url=http://h-net.msu.edu/cgi-bin/logbrowse.pl?trx=vx&list=h-diplo&month=9907&week=b&msg=sObK4G6XORytI4LXBpW2xw&user=&pw= |title=H-Net Discussion Networks - VENONA, the KGB, and Harry Hopkins [Haynes/Klehr&#93; |journal=H-Diplo |date=1999-07-14 |access-date=2014-02-15}}</ref><ref>{{Cite journal |last1=Klehr |first1=Harvey |last2=Haynes |first2=John Earl |date=2014-11-02 |title=Harry Hopkins and Soviet Espionage |url=http://www.tandfonline.com/doi/abs/10.1080/02684527.2014.913403 |journal=Intelligence and National Security |language=en |volume=29 |issue=6 |pages=864–879 |doi=10.1080/02684527.2014.913403 |issn=0268-4527}}</ref>


However, ] was a KGB archivist who defected to the United Kingdom in 1992 with copies of large numbers of KGB files. He claimed Harry Hopkins was a secret Russian agent.<ref>''The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB'', by Vasily Mitrokhin and Christopher Andrew.</ref> Moreover, ], a high-level KGB officer who also defected from the Soviet Union, reported that ], the KGB officer who controlled the clandestine Soviet agents in the US during the war, had said Hopkins was "the most important of all Soviet wartime agents in the United States".<ref>''KGB: The Inside Story of Its Foreign Operations from Lenin to Gorbachev'', by Oleg Gordievsky and Christopher Andrew.</ref>
349 U.S. citizens, noncitizen immigrants, and permanent residents of the United States who had covert relationships with Soviet intelligence were confirmed in the Venona traffic. Of these 171 are identified by true names and 178 are known only by a cover name.<sup id="fn_3_back">]</sup> The persons identified represent only a partial list and most are available in the main article. Twenty-four other persons were targeted for recruitment by the KGB, but evidence remains uncorroborated as to it having taken place. These persons are marked in the main article with an asterisk (*).<sup id="fn_4_back">]</sup>


]'s notes identified the source code-named "19" as ].<ref>{{cite book
==Document Release Issues==
| first1 = John Earl
| last1 = Haynes
| first2 = Harvey E.
| last2 = Klehr
| first3 = Alexander
| last3 = Vassiliev
| author-link3 = Alexander Vassiliev
| year = 2009
| title = Spies: The Rise and Fall of the KGB in America
| url = https://archive.org/details/spiesrisefallofk00john
| url-access = registration
| publisher = Yale University Press
| location = New Haven
| isbn = 978-0-300-12390-6
| pages =
}}</ref>


===Julius and Ethel Rosenberg===
The release of VENONA translations involved careful consideration of the privacy interests of individuals mentioned, referenced, or identified in the translations. Some names have not been released when to do so would constitute an invasion of privacy. <sup id="fn_5_back">]</sup>
{{Main|Julius and Ethel Rosenberg}}


Venona has added significant information to the case of Julius and Ethel Rosenberg, making it clear Julius was guilty of espionage, and also showing that Ethel, while not acting as a principal, still acted as an accessory who took part in Julius's espionage activity and played a role in the recruitment of her brother for atomic espionage.<ref>{{cite book |last= Haynes |first= John |title= Venona: Decoding Soviet Espionage in America |publisher= ] |location= ] |year= 2000 |isbn= 978-0-300-07771-1|quote=The Venona messages clearly display Julius Rosenberg's role as the leader of a productive ring of Soviet spies...they confirm that she was a participant in her husband's espionage and in the recruitment of her brother for atomic espionage. But they suggest that she was essentially an accessory to her husband's activity, having knowledge of it and assisting him but not acting as a principal.|url=https://www.nytimes.com/books/first/h/haynes-venona.html |access-date=August 16, 2016}}</ref>
The NSA has failed to release all the VENONA documents as machine-readable text files. (Text processing technology could be used to extract information from the decrypts for historical research if the VENONA documents were released in this form.)


Julius and Ethel Rosenberg also had another connection to a recruit for the Soviets named David Greenglass, who was Ethel's brother and Julius's brother-in-law.
The NSA website states:
"These historical documents are GIF images of formerly classified carbon paper and reports that have been declassified. Due to the age and poor quality of some of the GIF images, a screen reader may not be able to process the images into word documents."


Venona and other recent information has shown that, while the content of Julius' atomic espionage was not as vital to the Soviets as alleged at the time of his espionage activities, in other fields it was extensive. The information Rosenberg passed to the Soviets concerned the ], design and production information on the ] jet fighter, and thousands of classified reports from ].
"individuals may request that the government provide auxiliary aids or services to ensure effective communication of the substance of the documents. For such requests, please contact the Public Affairs Office at 301-688-6524."


The Venona evidence indicates unidentified sources code-named "Quantum" and "Pers" who facilitated transfer of nuclear weapons technology to the Soviet Union from positions within the Manhattan Project. According to Alexander Vassiliev's notes from KGB archive, "Quantum" was ] and "Pers" was Russell W. McNutt, an engineer from the uranium processing plant in ].<ref>{{cite book
==See also==
| first1 = John Earl
* ]
| last1 = Haynes
| first2 = Harvey E.
| last2 = Klehr
| first3 = Alexander
| last3 = Vassiliev
| author-link3 = Alexander Vassiliev
| year = 2009
| title = Spies: The Rise and Fall of the KGB in America
| url = https://archive.org/details/spiesrisefallofk00john
| url-access = registration
| publisher = Yale University Press
| location = New Haven
| isbn = 978-0-300-12390-6
| pages = , 339
}}</ref><ref>, ed. 2013, pp: 325, 343</ref>


=== David Greenglass ===
==Notes==
], codename KALIBER, was the brother of Ethel Rosenberg, and would be crucial in the conviction of the Rosenbergs. Greenglass was a former Army machinist who worked at Los Alamos. He was originally meant to replace a soldier who had gone AWOL, and lied on his security clearance in order to gain access onto the project.<ref name=":0">{{Cite news |last=McFadden |first=Robert D. |date=2014-10-14 |title=David Greenglass, the Brother Who Doomed Ethel Rosenberg, Dies at 92 |url=https://www.nytimes.com/2014/10/15/us/david-greenglass-spy-who-helped-seal-the-rosenbergs-doom-dies-at-92.html |access-date=2024-04-18 |work=The New York Times |language=en-US |issn=0362-4331}}</ref> Once Klaus Fuchs was caught, he gave up Harry Gold, who in turn, gave up Greenglass and his wife, as well as his sister and her husband. During their trial, Greenglass changed his story several times. At first, he didn't want to implicate his sister, but when his wife was threatened, he gave up both of them. According to Gerald Markowitz and Michael Meeropol, "In the Rosenberg-Sobell case, the government relied heavily upon the testimony of Greenglass, who pleaded guilty to conspiracy to commit espionage in exchange for a reduced sentence for himself and no indictment or prosecution for his wife, Ruth, who he alleged had aided him in committing espionage. Greenglass testified that he had passed information about the atom bomb to Gold and Rosenberg, who in turn passed it on to the Russians."<ref>{{Cite journal |last1=Markowitz |first1=Gerald E. |last2=Meeropol |first2=Michael |date=1980 |title=The "Crime of the Century" Revisited: David Greenglass' Scientific Evidence in the Rosenberg Case |url=https://www.jstor.org/stable/40402217 |journal=Science & Society |volume=44 |issue=1 |pages=1–26 |jstor=40402217 |issn=0036-8237}}</ref> In the end, Greenglass was sentenced to 15 years but was release in 1960 after serving only nine and a half.<ref name=":0" />


===Klaus Fuchs===
* <cite id="fn_1">]</cite> (1997)
{{Main|Klaus Fuchs}}
* <cite id="fn_2">]</cite> ''Secrecy: The American Experience''; by Daniel Patrick Moynihan, New Haven: Yale University Press 1998, pg. 15.
* <cite id="fn_3">]</cite> John Earl Haynes and Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'', Appendix A, Source Venona: Americans and U.S. Residents Who Had Covert Relationships with Soviet Intelligence Agencies, pgs. 339-370. (New Haven: Yale University Press, 1999)
* <cite id="fn_4">]</cite> Haynes and Klehr, Appendix D, Americans and U.S. Residents Targeted as Potential Sources by Soviet Intelligence Agencies, pgs. 387-389.
* <cite id="fn_5">]</cite> National Security Agency Archives, Cryptological Museum


The Venona decryptions were also important in the exposure of the atomic spy Klaus Fuchs. Some of the earliest messages decrypted concerned information from a scientist at the Manhattan Project, who was referred to by the code names of CHARLES and REST.{{sfn|Benson|2001|p=16}} Fuchs had joined the Manhattan Project at Los Alamos in 1944 where he provided information for the development of a plutonium implosion design. He is also credited with being of great assistance to the creation of a Soviet atomic bomb. Fuchs even gave the Soviets the blueprint for the Trinity device that would be detonated at Los Alamos in July 1945.<ref name="Goodman 2003 1–22">{{Cite journal |last=Goodman |first=Michael S. |date=2003 |title=The grandfather of the hydrogen bomb?: Anglo-American intelligence and Klaus Fuchs |url=https://www.jstor.org/stable/10.1525/hsps.2003.34.1.1 |journal=Historical Studies in the Physical and Biological Sciences |volume=34 |issue=1 |pages=1–22 |doi=10.1525/hsps.2003.34.1.1 |jstor=10.1525/hsps.2003.34.1.1 |issn=0890-9997}}</ref> One such message from Moscow to New York, dated April 10, 1945, called information provided by CHARLES "of great value." Noting that the information included "data on the atomic mass of the nuclear explosive" and "details on the explosive method of actuating" the atomic bomb, the message requested further technical details from CHARLES.<ref>{{Cite web|url=https://www.nsa.gov/news-features/declassified-documents/venona/dated/1945/assets/files/10apr_atomic_bomb_info.pdf|title=NSA, 2013}}</ref> Investigations based on the Venona decryptions eventually identified CHARLES and REST as Fuchs in 1949.{{sfn|Benson|2001|p=16}} Fuchs was eventually arrested and tried on March 1, 1950, where he confessed to four counts of espionage and received a maximum prison sentence of fourteen years.<ref name="Goodman 2003 1–22"/>
==References==
*
* (1997)
*
*


==Further reading== === Harry Gold ===
{{Main|Harry Gold}}
* Robert Louis Benson, Michael Warner, ''Venona: Soviet Espionage and the American Response 1939-1957'' (National Security Agency and Central Intelligence Agency, Washington D.C., 1996)
* Robert Louis Benson, ''The Venona Story'' (National Security Agency, Center for Cryptologic History, 2001)
* John Earl Haynes, Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'' (Yale University, New Haven, 1999)
* Nigel West, ''Venona: The Greatest Secret of the Cold War'' (HarperCollins, London, 1999)


The Venona decryptions also identified Soviet spy Harry Gold as an agent of the ] who stole blueprints, industrial formulas, and methods on their behalf from 1935 until ultimately confessing to these actions in 1950.<ref>{{Cite book |last1=Haynes |first1=John Earl |title=Venona: Decoding Soviet Espionage in America |last2=Klehr |first2=Harvey |date=1999 |publisher=Yale University Press |jstor=j.ctt1npk87 |isbn=978-0-300-07771-1}}</ref> During his years of work under the KGB, Gold operated under the code names GOOSE and ARNOLD. Gold was eager to provide his services after being initially recruited by Thomas Black on behalf of the ].<ref>{{Cite web | url=https://vault.fbi.gov/rosenberg-case/thomas-black/thomas-black-part-11-of-1 | title=Subject T. Black | website=vault.fbi.gov}}</ref>
===Additional background material===
* ], ''Secrecy: The American Experience'' (New Haven: Yale University Press 1998) ISBN 0300080794
* Richard J. Aldrich, ''The Hidden Hand: Britain, America, and Cold War Secret Intelligence'' (New York: Overlook Press, 2002) ISBN 1585672742.
* ], ''Body of Secrets: Anatomy of the Ultra-Secret National Security Agency'' (Anchor Books) ISBN 0385499086. (See also the same author's earlier, ''The Puzzle Palace'', also about the NSA.)
* Albright and Kunstel, ''Bombshell'' - About Soviet WWII espionage in the US, including Venona.
* Steven Budiansky, ''Battle of Wits'' - An overview in one volume of cryptography in WWII.


In 1935, Gold, with the assistance of Black, gained employment at the Pennsylvania Sugar Company, one of the largest producers of sugar in the world at the time. During his tenure, Gold worked under ] and ]. Over time, Gold began to work with Abraham Brothman, a fellow spy who was identified in Gold's confessions for stealing industrial processes on behalf of the Soviet Union and would later be convicted for lying under oath to a grand jury.<ref>{{Cite book |last=Hornblum |first=Allen M. |title=The Invisible Harry Gold: The Man Who Gave the Soviets the Atom Bomb |date=2010 |publisher=Yale University Press |doi=10.2307/j.ctt1npnvb |jstor=j.ctt1npnvb |isbn=978-0-300-15676-8}}</ref><ref>{{Cite web|url=https://vault.fbi.gov/rosenberg-case/abraham-brothman/abraham-brothman/view|title=FBI Records: The Vault — Abraham Brothman Part 01 of 66}}</ref>
==External links==


Gold's confessions turned out to be a major success for the FBI, as he would unveil a network of spies entrenched in the success of KGB espionage efforts. Along with Brothman,<ref></ref> (sentenced to 15 years), ], and Julius Rosenburg were all arrested following the interrogations of Gold. With regard to ], Fuchs, Greenglass, and Gold all played a role in aiding the Soviet atomic espionage campaign.
* Yale University Press Web site (Despite the title, this is less about VENONA itself than about Communist Party USA espionage and support of espionage.)
* per Denis Naranjo


===Alger Hiss and Harry Dexter White===
]
{{Main|Alger Hiss|Harry Dexter White}}
]

]
According to the Moynihan ], the complicity of both Alger Hiss and Harry Dexter White is conclusively proven by Venona,<ref>{{cite web|title=Appendix A; SECRECY; A Brief Account of the American Experience |publisher=United States Government Printing Office |year=1997 |url=http://origin.www.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf |pages=A–37 |archive-url=https://web.archive.org/web/20070629055716/http://origin.www.gpo.gov/congress/commissions/secrecy/pdf/12hist1.pdf |archive-date=June 29, 2007}}</ref><ref> {{webarchive|url=https://web.archive.org/web/20110721041016/http://origin.www.gpo.gov/congress/commissions/secrecy/ |date=2011-07-21}}</ref> stating "The complicity of Alger Hiss of the State Department seems settled. As does that of Harry Dexter White of the Treasury Department."<ref>
]
{{cite web
]
|url = http://www.law.umkc.edu/faculty/projects/ftrials/hiss/hissVenona.html
]
|title = The Venona Files and the Alger Hiss Case
|access-date = 2006-06-27
|author = Linder, Douglas
|year = 2003

|archive-url = https://web.archive.org/web/20060830194709/http://www.law.umkc.edu/faculty/projects/ftrials/hiss/hissvenona.html
|archive-date = 2006-08-30
}}</ref> In his 1998 book, United States Senator ] expressed certainty about Hiss's identification by Venona as a Soviet spy, writing "Hiss was indeed a Soviet agent and appears to have been regarded by Moscow as its most important."<ref>
{{cite book
| last = Moynihan
| first = Daniel Patrick
| year = 1998
| title = Secrecy: The American Experience
| url = https://archive.org/details/secrecyamericane00moyn
| url-access = registration
| publisher = Yale University Press
| pages =
| isbn = 978-0-300-08079-7
}}</ref>

===Donald Maclean and Guy Burgess===
{{More|Donald Maclean (spy){{!}}Donald Maclean|Guy Burgess}}
] had access to CIA and FBI files, and more damaging, access to Venona Project briefings. When Philby learned of Venona in 1949, he obtained advance warning that his fellow Soviet spy Donald Maclean was in danger of being exposed. The FBI told Philby about an agent cryptonymed "Homer", whose 1945 message to Moscow had been decoded. As it had been sent from New York and had its origins in the British Embassy in Washington, Philby, who would not have known Maclean's cryptonym, deduced the sender's identity. <ref>Philipps, Roland. 2018. ''A Spy Named Orphan: The Enigma of Donald Maclean.'' New York: W.W. Norton & Company.</ref> By early 1951, Philby knew US intelligence would soon also conclude Maclean was the sender and advised Moscow to extract Maclean. This led to Maclean and Guy Burgess' flight in May 1951 to Moscow, where they lived the remainder of their lives.{{sfn|Modin|1994|pp=190–199}}

=== Guy Burgess ===
Guy Burgess served as a British diplomat during the developing bomb project in the United States. He became a Soviet informant after beginning his studies at the University of Cambridge, where he and his classmates (Kim Philby, Anthony Blunt, and Donald Maclean) began developing ideals against a capitalist society.<ref>{{Cite book |last=Purvis |first=Stewart |title=Guy Burgess: The Spy Who Knew Everyone |date=January 28, 2016 |publisher=Biteback Publishing}}</ref> Burgess began developing connections throughout college as well as his future careers. He would continue to pass on information as a BBC Radio correspondent, an MI6 intelligence officer, and as a member of the British Foreign Office.<ref>{{Cite web |date=2024-02-19 |title=Guy Burgess {{!}} British Diplomat and Spy for the Soviet Union {{!}} Britannica |url=https://www.britannica.com/biography/Guy-Burgess |access-date=2024-04-18 |website=www.britannica.com |language=en}}</ref> When the Korean War began, Burgess and Philby passed on information regarding movements in Korea to Moscow.<ref>{{Cite book |last=Perry |first=Roland |title=Last of the Cold War Spies: The Life of Michael Straight |publisher=Da Capo Press |year=2005}}</ref> Philby had been working closely with British and American intelligence, and was able to be in proximity to any intelligence findings. When the VENONA Project uncovered Julius Rosenberg (LIBERAL) and his wife Ethel, the project posted that they knew of a British spy with the codename HOMER, which Philby knew to be Maclean. Philby (codename STANLEY) reached out to Burgess to remove Maclean to the Soviet Union. Burgess at this point, was overseas in Washington DC serving in the British Foreign Office, and couldn't do much. In 1950, he was sent back to Britain due to "bad behavior", where he was able to warn Maclean. Burgess knew he was under suspicion by MI5, British counterintelligence, and Scotland Yard's Special Branch.<ref>{{Cite book |last=Hamrick |first=SJ |title=Deceiving the Deceivers: Kim Philby, Donald Maclean, and Guy Burgess |publisher=Yale University Press |year=2004}}</ref> Both Philby and Burgess knew that out of all of the possible people to crack under pressure, Maclean was the easy choice. When Burgess finally convinced Maclean to leave, they fled to Moscow, followed by Philby shortly after.

===Soviet espionage in Australia===
In addition to British and American operatives, Australians collected Venona intercepts at a remote base in the Australian ]. The Soviets remained unaware of this base as late as 1950.{{sfn|Modin|1994|p=191}}

The founding of the ] (ASIO) by ] ] ] in 1949 was considered highly controversial within Chifley's own party.{{Citation needed|date=June 2011}} Until then, the ]-leaning Australian Labor Party had been hostile to domestic intelligence agencies on ] grounds and a Labor government founding one seemed a surprising about-face.{{Citation needed|date=June 2011}} But the presentation of Venona material to Chifley, revealing evidence of Soviet agents operating in Australia, brought this about. As well as Australian diplomat suspects abroad, Venona had revealed ] (cryptonym "KLOD"), a leading official within the ] (CPA), as the chief organizer of Soviet intelligence gathering in Australia.<ref>Andrew, Christopher. "The Defence of the Realm. The Authorized History of MI5", 2008. {{ISBN|978-0-14-102330-4}}, p. 371</ref> Investigation revealed that Clayton formed an underground network within the CPA so that the party could continue to operate if it were banned.{{Citation needed|date=June 2011}} In 1950, ] was appointed ASIO's deputy-director of operations for Venona, based in Sydney, charged with investigating intelligence that uncovered the eleven Australians identified in the cables that had been decoded. He continued Venona-related work in London with ] from November 1952 and went on to lead Operation Cabin 12, the high-profile ] to Australia of Soviet spy ].<ref name="ADB">{{cite encyclopedia |last1=Cain |first1=Frank |title=Richards, George Ronald (Ron) (1905–1985) |chapter=George Ronald (Ron) Richards (1905–1985) |url=http://adb.anu.edu.au/biography/richards-george-ronald-ron-14450 |dictionary=Australian Dictionary of Biography |access-date=13 January 2018 |publisher=National Centre of Biography, Australian National University}}</ref>

==Public disclosure==
For much of its history, knowledge of Venona was restricted even from the highest levels of government. Senior army officers, in consultation with the FBI and CIA, made the decision to restrict knowledge of Venona within the government (even the CIA was not made an active partner until 1952). Army Chief of Staff ], concerned about the White House's history of leaking sensitive information, decided to deny President Truman direct knowledge of the project. The president received the substance of the material only through FBI, Justice Department, and CIA reports on counterintelligence and intelligence matters. He was not told the material came from decoded Soviet ciphers. To some degree this secrecy was counter-productive; Truman was distrustful of FBI head ] and suspected the reports were exaggerated for political purposes.

Some of the earliest detailed public knowledge that Soviet code messages from World War II had been broken came with the release of ]'s book, ''Too Secret Too Long'', in 1984. ]'s book, ''The FBI-KGB War'', was released in 1986. Lamphere had been the FBI liaison to the code-breaking activity and had considerable knowledge of Venona and the ] work that resulted from it. However, the first detailed account of the Venona project, identifying it by name and making clear its long-term implications in post-war espionage, was contained in MI5 assistant director ]'s 1987 memoir, '']''.

Many inside the NSA had argued internally that the time had come to publicly release the details of the Venona project, but it was not until 1995 that the ] Commission on Government Secrecy, with Senator Moynihan as chairman, released Venona project materials. Moynihan wrote:
<blockquote>
secrecy system has systematically denied American historians access to the records of American history. Of late we find ourselves relying on archives of the former Soviet Union in ] to resolve questions of what was going on in Washington at mid-century. ... the Venona intercepts contained overwhelming proof of the activities of Soviet spy networks in America, complete with names, dates, places, and deeds.<ref>
{{cite book
| last = Moynihan
| first = Daniel Patrick
| year = 1998
| title = Secrecy: The American Experience
| url = https://archive.org/details/secrecyamericane00moyn
| url-access = registration
| publisher = Yale University Press
| page =
| isbn = 978-0-300-08079-7
}}</ref>
</blockquote>
One of the considerations in releasing Venona translations was the privacy interests of the individuals mentioned, referenced, or identified in the translations. Some names were not released because to do so would constitute an invasion of privacy.<ref>
{{cite web
| last = Benson
| first = Robert Louis
| url = https://fas.org/sgp/library/moynihan/appa6.html
| title = Venona Historical Monograph #4: The KGB in San Francisco and Mexico City and the GRU in New York and Washington
| publisher = National Security Agency Archives, Cryptological Museum
| access-date = 2006-06-18
}}</ref> However, in at least one case, independent researchers identified one of the subjects whose name had been obscured by the NSA.

The dearth of reliable information available to the public—or even to the President and Congress—may have helped to polarize debates of the 1950s over the extent and danger of Soviet espionage in the United States. ] suspected many spies remained at large, perhaps including some known to the government. Those who criticized the governmental and non-governmental efforts to root out and expose ] felt these efforts were an overreaction (in addition to other reservations about ]). Public access—or broader governmental access—to the Venona evidence would certainly have affected this debate, as it is affecting the retrospective debate among historians and others now. As the Moynihan Commission wrote in its final report:
<blockquote>
A balanced history of this period is now beginning to appear; the Venona messages will surely supply a great cache of facts to bring the matter to some closure. But at the time, the American Government, much less the American public, was confronted with possibilities and charges, at once baffling and terrifying.{{Citation needed|date=November 2024}}
</blockquote>

The ] features an exhibit on the Venona project in its "Cold War/Information Age" gallery.{{Citation needed|date=November 2024}}

==Texas textbook controversy==
Controversy arose in 2009 over the Texas State Board of Education's revision of their high school history class curricula to suggest Venona shows Senator ] to have been justified in his zeal in exposing those whom he believed to be Soviet spies or communist sympathizers.<ref>{{cite web|url=http://www.socialstudies.org/historians_speak_out_against_proposed_texas_textbook_changes |title=Historians speak out against proposed Texas textbook changes &#124; National Council for the Social Studies |publisher=Socialstudies.org |date=2010-03-18 |access-date=2014-02-15}}</ref> Critics such as Emory University history professor Harvey Klehr assert most people and organizations identified by McCarthy, such as those brought forward in the ] or rival politicians in the Democratic party, were not mentioned in the Venona content and that his accusations remain largely unsupported by evidence.<ref>{{cite web|url=http://tfn.org/rehabilitating-joseph-mccarthy/|title=Rehabilitating Joseph McCarthy? |publisher=TFN Insider |date=2009-10-29 |access-date=2016-07-26}}</ref>

==Critical views==
The majority of historians are convinced of the historical value of the Venona material. Intelligence historian ] believes that "Venona remain an irrefutable resource, far more reliable than the mercurial recollections of KGB defectors and the dubious conclusions drawn by paranoid analysts mesmerized by Machiavellian plots."<ref>{{cite book
| last = West
| first = Nigel
| year = 1999
| title = Venona: The Greatest Secret of the Cold War
| publisher = Harper Collins
| page = 330
| isbn = 978-0-00-653071-8
}}</ref> However, a number of writers and scholars have taken a critical view of the translations. They question the accuracy of the translations and the identifications of cryptonyms that the NSA translations give. Writers Walter and Miriam Schneir, in a lengthy 1999 review of one of the first book-length studies of the messages, object to what they see as the book's overconfidence in the translations' accuracy, noting that the undecrypted gaps in the texts can make interpretation difficult, and emphasizing the problem of identifying the individuals mentioned under cryptonyms.<ref>{{cite journal
| issn = 0027-8378
| volume = 269
| issue = 1
| pages = 25–30
| last = Schneir
| first = Walter
| author2 = Miriam Schneir
| title = Cables coming in from the cold (Review of ''Venona: Decoding Soviet Espionage in America'', by John Earl Haynes and Harvey Klehr)
| journal = Nation
| access-date = 2013-10-03
| date = 1999-07-05
| url = https://www.thenation.com/article/archive/cables-coming-cold/
}}</ref> To support their critique, they cite a declassified memorandum, written in 1956 by A. H. Belmont, who was assistant to FBI director J. Edgar Hoover at the time.<ref>The memo is now available on line at {{cite web
| title = FBI Records on Venona
| work = FBI Records: The Vault
| access-date = 2013-10-03
| url = http://vault.fbi.gov/Venona
}}</ref> {{Wikisource|Venona: FBI Documents of Historic Interest/Belmont Memorandum 1956-02-01|The Belmont memo}} In the memo, Belmont discusses the possibility of using the Venona translations in court to prosecute Soviet agents and comes out strongly opposed to their use. His reasons include legal uncertainties about the admissibility of the translations as evidence, and the difficulties that prosecution would face in supporting the validity of the translations. Belmont highlights the uncertainties in the translation process, noting that the cryptographers have indicated that "almost anything included in a translation of one of these deciphered messages may in the future be radically revised."{{Citation needed|date=November 2024}} He also notes the complexities of identifying people with cryptonyms, describing how the personal details mentioned for cryptonym "Antenna" fit more than one person, and the investigative process required to finally connect "Antenna" to Julius Rosenberg. The Schneirs conclude that "A reader faced with Venona's incomplete, disjointed messages can easily arrive at a badly skewed impression."<ref>{{cite journal
| issn = 0027-8378
| volume = 269
| issue = 1
| page = 28
| last = Schneir
| first = Walter
| author2 = Miriam Schneir
| title = Cables coming in from the cold. (Review of Venona: Decoding Soviet Espionage in America, by John Earl Haynes and Harvey Klehr)
| journal = Nation
| access-date = 2013-10-03
| date = 1999-07-05
| url = http://www.thenation.com/article/cables-coming-cold
}}</ref>

Many of the critiques of the Venona translations have been based on specific cases. The Schneirs' critique of the Venona documents was based on their decades of work on the case of Ethel and Julius Rosenberg. Another critique of the Venona translations came from the late Rutgers University law professor John Lowenthal, who as a law student worked as a volunteer for Alger Hiss's defense team, and later wrote extensively on the Hiss case.<ref>For Lowenthal's work on the Hiss case see the {{webarchive|url=https://web.archive.org/web/20130603211223/https://files.nyu.edu/th15/public/lowenthal.html |date=2013-06-03}} website, hosted at NYU.</ref> Lowenthal's critique focused on one message (Venona 1822 KGB Washington-Moscow 30 March 1945),<ref>Available at the NSA's .</ref> in which the comments identified the cryptonym 'Ales' as "probably Alger Hiss." Lowenthal raised a number of objections to this identification, rejecting it as "a conclusion psychologically motivated and politically correct but factually wrong."<ref>{{cite journal
| volume = 15
| issue = 3
| pages = 98–130
| last = Lowenthal
| first = John
| title = Venona and Alger Hiss
| journal = Intelligence and National Security
| year = 2000
| doi=10.1080/02684520008432619
| s2cid = 154475407
}}</ref> Lowenthal's article led to an extended debate on the 'Ales' message,<ref>The first response to Lowenthal was {{cite journal
| volume = 18
| issue = 3
| pages = 45–72
| last = Mark
| first = Eduard
| title = Who was 'Venona's' 'Ales'? cryptanalysis and the Hiss case
| journal = Intelligence and National Security
| year = 2003
| doi=10.1080/02684520412331306920
| s2cid = 154152581
}}

Following this there was an extended discussion on and . For a summary of a draft response from Lowenthal (he died in 2003) see {{cite journal
| volume = 20
| issue = 3
| pages = 509–512
| last = Lowenthal
| first = David
| author2 = Roger Sandilands
| title = Eduard Mark on Venona's 'Ales': A note
| journal = Intelligence and National Security
| year = 2005
| doi=10.1080/02684520500269051
| s2cid = 150719055
}}
Another response following this was {{cite web
| last = Bird
| first = Kai
| author2 = Svetlana Chervonnaya
| title = The Mystery of Ales (Expanded Version)
| work = The American Scholar
| year = 2007
| url = http://theamericanscholar.org/the-mystery-of-ales-2/
}} This gave rise to a conference paper: {{cite web
| last = Haynes
| first = John Earl
| author2 = Harvey Klehr
| title=Ales is Still Hiss: The Wilder Foote Red Herring
| date = 2007-10-19
| url = http://www.johnearlhaynes.org/page70.html
| archive-url = https://web.archive.org/web/20120728190441/http://www.johnearlhaynes.org/page70.html
| archive-date = 2012-07-28
}} (archived version)
and finally a response from Mark again (he died in 2009): {{cite journal
| volume = 11
| issue = 3
| pages = 26–67
| last = Mark
| first = Eduard
| title = In Re Alger Hiss
| journal = Journal of Cold War Studies
| year = 2009
| doi=10.1162/jcws.2009.11.3.26
| s2cid = 57560522
}}</ref> and even prompted the NSA to declassify the original Russian text.<ref>See {{cite web
| last = Schindler
| first = John R.
| title = Hiss in VENONA: The Continuing Controversy
| date = 2005-10-27
| url = http://www.johnearlhaynes.org/page61.html
| archive-url = https://web.archive.org/web/20130603232953/http://www.johnearlhaynes.org/page61.html
| archive-date = 2013-06-03
}} (archived version).</ref> Currently, Venona 1822 is the only message for which the complete decrypted Russian text has been published.

], editor and publisher of '']'', has also written several editorials highly critical of Haynes' and Klehr's interpretation of recent work on the subject of Soviet espionage. Navasky claims the Venona material is being used to "distort ... our understanding of the cold war" and that the files are potential "time bombs of misinformation."<ref name=ghosts>{{cite news
| url = http://www.thenation.com/article/cold-war-ghosts
| title = Cold War Ghosts
| access-date = 2006-06-27
| last = Navasky
| first = Victor
| date = July 16, 2001
| newspaper = The Nation
}}</ref> Commenting on the list of 349 Americans identified by Venona, published in an appendix to ''Venona: Decoding Soviet Espionage in America'', Navasky wrote, "The reader is left with the implication—unfair and unproven—that every name on the list was involved in espionage, and as a result, otherwise careful historians and mainstream journalists now routinely refer to Venona as proof that many hundreds of Americans were part of the red spy network."<ref name=ghosts/> Navasky goes further in his defense of the listed people and has claimed a great deal of the so-called espionage that went on was nothing more than "exchanges of information among people of good will" and that "most of these exchanges were innocent and were within the law."<ref name="decrypts"/>

According to historian ], "Because they offer insights into the world of the secret police on both sides of the ], it is tempting to treat the FBI and Venona materials less critically than documents from more accessible sources. But there are too many gaps in the record to use these materials with complete confidence."<ref>{{cite book
| last = Schrecker
| first = Ellen
| year = 1998
| title = Many are the Crimes: McCarthyism in America
| publisher = Little, Brown
| pages = xvii–xviii
| isbn = 978-0-316-77470-3
| url = https://archive.org/details/manyarecrimesmcc00schr
}}</ref> Schrecker believes the documents established the guilt of many prominent figures but is still critical of the views of scholars such as Haynes, arguing, "complexity, nuance, and a willingness to see the world in other than black and white seem alien to Haynes' view of history."<ref>{{cite web
| url = http://www.fas.harvard.edu/~hpcws/comment15.htm
| title = Comments on John Earl Haynes', "The Cold War Debate Continues: A Traditionalist View of Historical Writing on Domestic Communism and Anti-Communism"
| access-date = 2006-06-27
| last = Schrecker
| first = Ellen
}}</ref>

==See also==
* ]
* ]
* ]
* ]
* ]

==Notes==
{{Reflist|30em}}

==References and further reading==
{{Refbegin}}

===Books===
*{{cite book
| last = Aldrich
| first = Richard J.
| year = 2001
| title = The Hidden Hand: Britain, America and Cold War Secret Intelligence
| publisher = John Murray Pubs Ltd
| isbn = 978-0-7195-5426-1
}}
*{{cite book
| last = Bamford
| first = James
| year = 2002
| title = Body of Secrets: Anatomy of the Ultra-Secret National Security Agency
| publisher = Anchor Books
| isbn = 978-0-385-49908-8
| url-access = registration
| url = https://archive.org/details/bodyofsecretsana0000bamf
}}
*{{cite book
| last = Benson
| first = Robert Louis
| year = 1996
| title = Venona: Soviet Espionage and the American Response 1939–1957
| publisher = Aegean Park Press
| isbn = 978-0-89412-265-1
}}
*{{cite book
| last = Budiansky
| first = Stephen
| year = 2002
| title = Battle of Wits: The Complete Story of Codebreaking in World War II
| publisher = Free Press
| isbn = 978-0-7432-1734-7
| url = https://archive.org/details/battleofwitscomp00step
}}
*{{cite book
|author1=Haynes, John Earl |author2=Klehr, Harvey
|name-list-style=amp |year = 2000
| title = Venona: Decoding Soviet Espionage in America
| publisher = Yale University Press
| isbn = 978-0-300-08462-7
}}
*{{cite book
| first1 = John Earl
| last1 = Haynes
| first2 = Harvey E.
| last2 = Klehr
| first3 = Alexander
| last3 = Vassiliev
| author-link3 = Alexander Vassiliev
| year = 2009
| title = Spies: The Rise and Fall of the KGB in America
| url = https://archive.org/details/spiesrisefallofk00john
| url-access = registration
| publisher = Yale University Press
| location = New Haven
| isbn = 978-0-300-12390-6
}}
*{{cite book
| last = Lamphere
| first = Robert J.
|author2=Shachtman, Tom
| year = 1995
| title = The FBI-KGB War: A Special Agent's Story
| publisher = Mercer University Press
| isbn = 978-0-86554-477-2
}}
*{{cite book |last=Modin |first=Yuri |author-link=Yuri Modin |year=1994 |title=My Five Cambridge Friends |publisher=] |isbn=0-374-21698-3}}
*{{cite book
| last = Schrecker
| first = Ellen
| year = 1998
| title = Many Are the Crimes: McCarthyism in America
| publisher = Little, Brown
| isbn = 978-0-316-77470-3
| url = https://archive.org/details/manyarecrimesmcc00schr
}}
*{{cite book
| last = Schrecker
| first = Ellen
| year = 2006
| title = Cold War Triumphalism: The Misuse of History After the Fall of Communism
| publisher = New Press
| isbn = 978-1-59558-083-2
}}
*{{cite book
| author1 = Romerstein, Herbert
| author2 = Breindel, Eric
| name-list-style = amp
| year = 2000
| title = The Venona Secrets: Exposing Soviet Espionage and America's Traitors
| publisher = Regnery Publishing
| isbn = 978-0-89526-275-2
| url = https://archive.org/details/venonasecretsexp00rome
}}
*{{cite book
| author = Theoharis, Athan
| year = 2002
| title = Chasing Spies: How the FBI Failed in Counterintelligence But Promoted the Politics of McCarthyism in the Cold War Years
| publisher = Ivan R. Dee
| isbn = 978-1-56663-420-5
| url = https://archive.org/details/chasingspieshowf00theo
}}
*{{cite book
|author1=Trahair, Richard C.S |author2=Miller, Robert
|name-list-style=amp |year = 2009
| title = Encyclopedia of Cold War Espionage, Spies, and Secret Operations
| publisher = Enigma Books
| isbn = 978-1-929631-75-9
}}
*{{cite book
| last = Warner
| first = Michael
| year = 1996
| title = Venona: Soviet Espionage & American Response
| publisher = Aegean Park Press
| isbn = 978-0-89412-265-1
}}
*{{cite book
| last = West
| first = Diana
| year = 2013
| title = American Betrayal
| publisher = St. Martin's Press
| location = New York
| isbn = 978-0-312-63078-2
}}
*{{cite book
| last = West
| first = Nigel
| year = 1999
| title = Venona: The Greatest Secret of the Cold War
| publisher = Harper Collins
| isbn = 978-0-00-653071-8
}}
*{{cite book
| last = Wright
| first = Peter
| author-link = Peter Wright (MI5 officer)
| author2 = Paul Greengrass
| year = 1987
| title = Spycatcher: The Candid Autobiography of a Senior Intelligence Officer
| url = https://archive.org/details/spycatchercandid00wrigrich
| url-access = registration
| publisher = Viking
| isbn = 978-0-670-82055-9
}}

===Online sources===
*{{cite web
| url = https://www.nsa.gov/news-features/declassified-documents/venona/index.shtml
| title = NSA official Venona site
| access-date = 2017-01-15
| publisher = National Security Agency
| archive-date = February 3, 2017
| archive-url = https://web.archive.org/web/20170203071335/https://www.nsa.gov/news-features/declassified-documents/venona/index.shtml
| url-status = dead
}}
** {{Webarchive|url=https://web.archive.org/web/20210918165225/https://www.nsa.gov/news-features/declassified-documents/venona/dated/ |date=September 18, 2021 }} (NSA)
*{{cite web
| url = https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/venona-soviet-espionage-and-the-american-response-1939-1957/part2.htm
| archive-url = https://web.archive.org/web/20070613142207/https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/venona-soviet-espionage-and-the-american-response-1939-1957/part2.htm
| archive-date = June 13, 2007
| title = Selected Venona Messages
| access-date = 2007-11-08
| publisher = Central Intelligence Agency
}}
*{{cite web
| title = The American Response to Soviet Espionage
| publisher = CIA
| year = 1996
| url = https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/venona-soviet-espionage-and-the-american-response-1939-1957/part1.htm
| archive-url = https://web.archive.org/web/20070613142202/https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/venona-soviet-espionage-and-the-american-response-1939-1957/part1.htm
| archive-date = June 13, 2007
| access-date = 2007-11-08
}}
*{{cite web
| author = Daniel Patrick Moynihan, Chairman
| author-link = Daniel Patrick Moynihan
| year = 1997
| url = https://fas.org/sgp/library/moynihan/index.html
| title = Report of the Commission On Protecting And Reducing Government Secrecy
| publisher = United States Government Printing Office
| access-date = 2006-06-18
}}
*{{cite web |url=http://www.mi5.gov.uk/output/Page242.html |title=MI5 Releases to the National Archives |access-date=2006-07-09 |publisher=MI5 |archive-url=https://web.archive.org/web/20060710193346/http://www.mi5.gov.uk/output/Page242.html |archive-date=July 10, 2006 }}
*{{cite web
| url = http://www-personal.umich.edu/~sanders/214/other/handouts/VenonaChrono.html
| title = Venona Chronology 1939–1996
| access-date = 2006-07-09
| author = Naranjo, Denis
}}
*{{cite web
| url = http://216.239.37.104/translate_c?hl=en&u=https://www.pbs.org/redfiles/kgb/deep/interv/k_int_cecil_philips.htm&prev=/search%3Fq%3DHarold%2BGlasser%2Bvenona%26start%3D60%26hl%3Den%26lr%3D%26sa%3DN
| title = Red Files: Interview with Cecil Philips, US Signal Intelligence Service
| access-date = 2006-07-09
| publisher = PBS
}}
*{{cite web
| last = Benson
| first = Robert Louis
| title = The Venona Story
| publisher = ], Center for Cryptologic History
| location = Fort George G. Meade, Maryland
| year = 2001
| url = https://www.nsa.gov/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/assets/files/venona_story.pdf
| access-date = 2018-04-20
}}
**{{cite web |author=Robert L. Benson |title=The Venona Story |website=National Security Agency |url=http://www.nsa.gov/publications/publi00039.cfm |archive-url=https://web.archive.org/web/20040430144549/http://www.nsa.gov/publications/publi00039.cfm |archive-date=2004-04-30 }}
*{{cite web
| last = Fox
| first = John F. Jr.
| title = In the Enemy's House: Venona and the Maturation of American Counterintelligence
| publisher = FBI
| year = 2005
| url = https://www.fbi.gov/libref/historic/history/foxpaper.htm
| access-date = 2006-11-17
| archive-url = https://web.archive.org/web/20061115021025/http://www.fbi.gov/libref/historic/history/foxpaper.htm <!-- Bot retrieved archive -->
| archive-date = 2006-11-15
}}
*{{cite web |author1=Romerstein, Herbert |author2=Breindel, Eric |name-list-style=amp |title=Preface to ''The Venona Secrets'' |publisher=Regnery Publishing |year=2000 |url=http://www.regnery.com/regnery/010309_venona_preface.html |access-date=2006-11-17 |archive-url=https://web.archive.org/web/20061016033311/http://www.regnery.com/regnery/010309_venona_preface.html |archive-date=October 16, 2006 }}
*{{cite web
| url = https://archive.org/details/nsia-venona
| title = Venona Documents on the Internet Archive
| publisher = Internet Archive
}}
*
{{Refend}}

==External links==
{{Commons category-inline}}
*
{{National Security Agency}}


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Latest revision as of 15:49, 10 December 2024

American counterintelligence program during World War II and Cold War "Venona" redirects here. For the place in Roman Britain, see Venonae.

The Venona project was a United States counterintelligence program initiated during World War II by the United States Army's Signal Intelligence Service and later absorbed by the National Security Agency (NSA), that ran from February 1, 1943, until October 1, 1980. It was intended to decrypt messages transmitted by the intelligence agencies of the Soviet Union (e.g. the NKVD, the KGB, and the GRU). Initiated when the Soviet Union was an ally of the US, the program continued during the Cold War, when the Soviet Union was considered an enemy.

During the 37-year duration of the Venona project, the Signal Intelligence Service decrypted and translated approximately 3,000 messages. The signals intelligence yield included discovery of the Cambridge Five espionage ring in the United Kingdom, and also of Soviet espionage of the Manhattan Project in the US, known as Project Enormous. Some of the espionage was undertaken to support the Soviet atomic bomb project. The Venona project remained secret for more than 15 years after it concluded. Some of the decoded Soviet messages were not declassified and published by the United States until 1995.

Background

During World War II and the early years of the Cold War, the Venona project was a source of information on Soviet intelligence-gathering directed at the Western military powers. Although unknown to the public, and even to Presidents Franklin D. Roosevelt and Harry S. Truman, these programs were of importance concerning crucial events of the early Cold War. These included the Julius and Ethel Rosenberg spying case (which was based on events during World War II) and the defections of Donald Maclean and Guy Burgess to the Soviet Union.

Most decipherable messages were transmitted and intercepted between 1942 and 1945, during World War II, when the Soviet Union was an ally of the US. Sometime in 1945, the existence of the Venona program was revealed to the Soviet Union by cryptologist-analyst Bill Weisband, an NKVD agent in the US Army's SIGINT. These messages were slowly and gradually decrypted beginning in 1946. This effort continued (many times at a low level of effort in the latter years) through 1980, when the Venona program was terminated. The analyst effort assigned to it was moved to more important projects.

To what extent the various individuals referred to in the messages were involved with Soviet intelligence is a topic of minor historical dispute. Most academics and historians have established that most of the individuals mentioned in the Venona decrypts were probably either clandestine assets and/or contacts of Soviet intelligence agents, and very few argue that many of those people probably had no malicious intentions and committed no crimes.

Commencement

Gene Grabeel, the first cryptanalyst of the Venona project

The VENONA Project was initiated on February 1, 1943, by Gene Grabeel, an American mathematician and cryptanalyst, under orders from Colonel Carter W. Clarke, Chief of Special Branch of the Military Intelligence Service at that time. Clarke distrusted Joseph Stalin, and feared that the Soviet Union would sign a separate peace with Nazi Germany, allowing Germany to focus its military forces against the United Kingdom and the United States. Cryptanalysts of the US Army's Signal Intelligence Service at Arlington Hall analyzed encrypted high-level Soviet diplomatic intelligence messages intercepted in large volumes during and immediately after World War II by American, British, and Australian listening posts.

Decryption

This message traffic, which was encrypted with a one-time pad system, was stored and analyzed in relative secrecy by hundreds of cryptanalysts over a 40-year period starting in the early 1940s. When used correctly, the one-time pad encryption system, which has been used for all the most-secret military and diplomatic communication since the 1930s, is unbreakable. However, due to a serious blunder on the part of the Soviets, some of this traffic was vulnerable to cryptanalysis. The Soviet company that manufactured the one-time pads produced around 35,000 pages of duplicate key numbers, as a result of pressures brought about by the German advance on Moscow during World War II. The duplication—which undermines the security of a one-time system—was discovered, and attempts to lessen its impact were made by sending the duplicates to widely separated users. Despite this, the reuse was detected by cryptanalysts in the US.

Breakthrough

Genevieve Feinstein

The Soviet systems in general used a code to convert words and letters into numbers, to which additive keys (from one-time pads) were added, encrypting the content. When used correctly so that the plaintext is of a length equal to or less than that of a random key, one-time pad encryption is unbreakable. However, cryptanalysis by American code-breakers revealed that some of the one-time pad material had incorrectly been reused by the Soviets (specifically, entire pages, although not complete books), which allowed decryption (sometimes only partial) of a small part of the traffic.

Generating the one-time pads was a slow and labor-intensive process, and the outbreak of war with Germany in June 1941 caused a sudden increase in the need for coded messages. It is probable that the Soviet code generators started duplicating cipher pages in order to keep up with demand.

It was Arlington Hall's Lieutenant Richard Hallock, working on Soviet "Trade" traffic (so called because these messages dealt with Soviet trade issues), who first discovered that the Soviets were reusing pages. Hallock and his colleagues, amongst whom were Genevieve Feinstein, Cecil Phillips, Frank Lewis, Frank Wanat, and Lucille Campbell, went on to break into a significant amount of Trade traffic, recovering many one-time pad additive key tables in the process.

Meredith Gardner (far left); most of the other code breakers were young women.

A young Meredith Gardner then used this material to break into what turned out to be NKVD (and later GRU) traffic by reconstructing the code used to convert text to numbers. Gardner credits Marie Meyer, a linguist with the Signal Intelligence Service with making some of the initial recoveries of the Venona codebook. Samuel Chew and Cecil Phillips also made valuable contributions. On December 20, 1946, Gardner made the first break into the code, revealing the existence of Soviet espionage in the Manhattan Project. Venona messages also indicated that Soviet spies worked in Washington in the State Department, Treasury, Office of Strategic Services (OSS), and even the White House. Very slowly, using assorted techniques ranging from traffic analysis to defector information, more of the messages were decrypted.

Claims have been made that information from the physical recovery of code books (a partially burned one was obtained by the Finns) to bugging embassy rooms in which text was entered into encrypting devices (analyzing the keystrokes by listening to them being punched in) contributed to recovering much of the plaintext. These latter claims are less than fully supported in the open literature.

One significant aid (mentioned by the NSA) in the early stages may have been work done in cooperation between the Japanese and Finnish cryptanalysis organizations; when the Americans broke into Japanese codes during World War II, they gained access to this information. There are also reports that copies of signals purloined from Soviet offices by the Federal Bureau of Investigation (FBI) were helpful in the cryptanalysis. The Finnish radio intelligence sold much of its material concerning Soviet codes to the OSS in 1944 during Operation Stella Polaris, including the partially burned code book.

Results

The NSA reported that (according to the serial numbers of the Venona cables) thousands of cables were sent, but only a fraction were available to the cryptanalysts. Approximately 2,200 messages were decrypted and translated; about half of the 1943 GRU-Naval Washington to Moscow messages were broken, but none for any other year, although several thousand were sent between 1941 and 1945. The decryption rate of the NKVD cables was as follows:

  • 1942: 1.8%
  • 1943: 15.0%
  • 1944: 49.0%
  • 1945: 1.5%

Out of some hundreds of thousands of intercepted encrypted texts, it is claimed under 3,000 have been partially or wholly decrypted. All the duplicate one-time pad pages were produced in 1942, and almost all of them had been used by the end of 1945, with a few being used as late as 1948. After this, Soviet message traffic reverted to being completely unreadable.

The existence of Venona decryption became known to the Soviets within a few years of the first breaks. It is not clear whether the Soviets knew how much of the message traffic or which messages had been successfully decrypted. At least one Soviet penetration agent, British Secret Intelligence Service representative to the US Kim Philby, was told about the project in 1949, as part of his job as liaison between British and US intelligence. Since all of the duplicate one-time pad pages had been used by this time, the Soviets apparently did not make any changes to their cryptographic procedures after they learned of Venona. However, this information allowed them to alert those of their agents who might be at risk of exposure due to the decryption.

Significance

The decrypted messages gave important insights into Soviet behavior in the period during which duplicate one-time pads were used. With the first break into the code, Venona revealed the existence of Soviet espionage at the Manhattan Project's Site Y (Los Alamos). Identities soon emerged of American, Canadian, Australian, and British spies in service to the Soviet government, including Klaus Fuchs, Alan Nunn May, and Donald Maclean. Others worked in Washington in the State Department, the Treasury, OSS, and even the White House.

The messages show that the US and other nations were targeted in major espionage campaigns by the Soviet Union as early as 1942. Among those identified are Julius and Ethel Rosenberg, Alger Hiss, Harry Dexter White (the second-highest official in the Treasury Department), Lauchlin Currie (a personal aide to Franklin Roosevelt), and Maurice Halperin (a section head in the Office of Strategic Services).

The identification of individuals mentioned in Venona transcripts is sometimes problematic, since people with a "covert relationship" with Soviet intelligence are referenced by cryptonyms. Further complicating matters is the fact the same person sometimes had different cryptonyms at different times, and the same cryptonym was sometimes reused for different individuals. In some cases, notably Hiss, the matching of a Venona cryptonym to an individual is disputed. In many other cases, a Venona cryptonym has not yet been linked to any person. According to authors John Earl Haynes and Harvey Klehr, the Venona transcripts identify approximately 349 Americans who they claim had a covert relationship with Soviet intelligence, though fewer than half of these have been matched to real-name identities. However, not every agent may have been communicating directly with Soviet intelligence. Each of those 349 persons may have had many others working for, and reporting only to, them.

The OSS, the predecessor to the Central Intelligence Agency (CIA), housed at one time or another between fifteen and twenty Soviet spies. Duncan Lee, Donald Wheeler, Jane Foster Zlatowski, and Maurice Halperin passed information to Moscow. The War Production Board, the Board of Economic Warfare, the Office of the Coordinator of Inter-American Affairs, and the Office of War Information, included at least half a dozen Soviet sources each among their employees.

Bearing of Venona on particular cases

Venona has added information – some unequivocal, some ambiguous – to several espionage cases. Some known spies, including Theodore Hall, were neither prosecuted nor publicly implicated, because the Venona evidence against them was withheld.

"19"

The identity of the Soviet source cryptonymed "19" remains unclear. According to British writer Nigel West, "19" was Edvard Beneš, president of the Czechoslovak government-in-exile. Military historian Eduard Mark and American authors Herbert Romerstein and Eric Breindel concluded it was Roosevelt's aide Harry Hopkins. According to American authors John Earl Haynes and Harvey Klehr, "19" could be someone from the British delegation to the Washington Conference in May 1943. Moreover, they argue no evidence of Hopkins as an agent has been found in other archives, and the partial message relating to "19" does not indicate whether this source was a spy.

However, Vasili Mitrokhin was a KGB archivist who defected to the United Kingdom in 1992 with copies of large numbers of KGB files. He claimed Harry Hopkins was a secret Russian agent. Moreover, Oleg Gordievsky, a high-level KGB officer who also defected from the Soviet Union, reported that Iskhak Akhmerov, the KGB officer who controlled the clandestine Soviet agents in the US during the war, had said Hopkins was "the most important of all Soviet wartime agents in the United States".

Alexander Vassiliev's notes identified the source code-named "19" as Laurence Duggan.

Julius and Ethel Rosenberg

Main article: Julius and Ethel Rosenberg

Venona has added significant information to the case of Julius and Ethel Rosenberg, making it clear Julius was guilty of espionage, and also showing that Ethel, while not acting as a principal, still acted as an accessory who took part in Julius's espionage activity and played a role in the recruitment of her brother for atomic espionage.

Julius and Ethel Rosenberg also had another connection to a recruit for the Soviets named David Greenglass, who was Ethel's brother and Julius's brother-in-law.

Venona and other recent information has shown that, while the content of Julius' atomic espionage was not as vital to the Soviets as alleged at the time of his espionage activities, in other fields it was extensive. The information Rosenberg passed to the Soviets concerned the proximity fuze, design and production information on the Lockheed P-80 jet fighter, and thousands of classified reports from Emerson Radio.

The Venona evidence indicates unidentified sources code-named "Quantum" and "Pers" who facilitated transfer of nuclear weapons technology to the Soviet Union from positions within the Manhattan Project. According to Alexander Vassiliev's notes from KGB archive, "Quantum" was Boris Podolsky and "Pers" was Russell W. McNutt, an engineer from the uranium processing plant in Oak Ridge.

David Greenglass

David Greenglass, codename KALIBER, was the brother of Ethel Rosenberg, and would be crucial in the conviction of the Rosenbergs. Greenglass was a former Army machinist who worked at Los Alamos. He was originally meant to replace a soldier who had gone AWOL, and lied on his security clearance in order to gain access onto the project. Once Klaus Fuchs was caught, he gave up Harry Gold, who in turn, gave up Greenglass and his wife, as well as his sister and her husband. During their trial, Greenglass changed his story several times. At first, he didn't want to implicate his sister, but when his wife was threatened, he gave up both of them. According to Gerald Markowitz and Michael Meeropol, "In the Rosenberg-Sobell case, the government relied heavily upon the testimony of Greenglass, who pleaded guilty to conspiracy to commit espionage in exchange for a reduced sentence for himself and no indictment or prosecution for his wife, Ruth, who he alleged had aided him in committing espionage. Greenglass testified that he had passed information about the atom bomb to Gold and Rosenberg, who in turn passed it on to the Russians." In the end, Greenglass was sentenced to 15 years but was release in 1960 after serving only nine and a half.

Klaus Fuchs

Main article: Klaus Fuchs

The Venona decryptions were also important in the exposure of the atomic spy Klaus Fuchs. Some of the earliest messages decrypted concerned information from a scientist at the Manhattan Project, who was referred to by the code names of CHARLES and REST. Fuchs had joined the Manhattan Project at Los Alamos in 1944 where he provided information for the development of a plutonium implosion design. He is also credited with being of great assistance to the creation of a Soviet atomic bomb. Fuchs even gave the Soviets the blueprint for the Trinity device that would be detonated at Los Alamos in July 1945. One such message from Moscow to New York, dated April 10, 1945, called information provided by CHARLES "of great value." Noting that the information included "data on the atomic mass of the nuclear explosive" and "details on the explosive method of actuating" the atomic bomb, the message requested further technical details from CHARLES. Investigations based on the Venona decryptions eventually identified CHARLES and REST as Fuchs in 1949. Fuchs was eventually arrested and tried on March 1, 1950, where he confessed to four counts of espionage and received a maximum prison sentence of fourteen years.

Harry Gold

Main article: Harry Gold

The Venona decryptions also identified Soviet spy Harry Gold as an agent of the KGB who stole blueprints, industrial formulas, and methods on their behalf from 1935 until ultimately confessing to these actions in 1950. During his years of work under the KGB, Gold operated under the code names GOOSE and ARNOLD. Gold was eager to provide his services after being initially recruited by Thomas Black on behalf of the Amtorg.

In 1935, Gold, with the assistance of Black, gained employment at the Pennsylvania Sugar Company, one of the largest producers of sugar in the world at the time. During his tenure, Gold worked under Semyon Semyonov and Klaus Fuchs. Over time, Gold began to work with Abraham Brothman, a fellow spy who was identified in Gold's confessions for stealing industrial processes on behalf of the Soviet Union and would later be convicted for lying under oath to a grand jury.

Gold's confessions turned out to be a major success for the FBI, as he would unveil a network of spies entrenched in the success of KGB espionage efforts. Along with Brothman, (sentenced to 15 years), David Greenglass, and Julius Rosenburg were all arrested following the interrogations of Gold. With regard to Los Alamos, Fuchs, Greenglass, and Gold all played a role in aiding the Soviet atomic espionage campaign.

Alger Hiss and Harry Dexter White

Main articles: Alger Hiss and Harry Dexter White

According to the Moynihan Commission on Government Secrecy, the complicity of both Alger Hiss and Harry Dexter White is conclusively proven by Venona, stating "The complicity of Alger Hiss of the State Department seems settled. As does that of Harry Dexter White of the Treasury Department." In his 1998 book, United States Senator Daniel Patrick Moynihan expressed certainty about Hiss's identification by Venona as a Soviet spy, writing "Hiss was indeed a Soviet agent and appears to have been regarded by Moscow as its most important."

Donald Maclean and Guy Burgess

Further information: Donald Maclean and Guy Burgess

Kim Philby had access to CIA and FBI files, and more damaging, access to Venona Project briefings. When Philby learned of Venona in 1949, he obtained advance warning that his fellow Soviet spy Donald Maclean was in danger of being exposed. The FBI told Philby about an agent cryptonymed "Homer", whose 1945 message to Moscow had been decoded. As it had been sent from New York and had its origins in the British Embassy in Washington, Philby, who would not have known Maclean's cryptonym, deduced the sender's identity. By early 1951, Philby knew US intelligence would soon also conclude Maclean was the sender and advised Moscow to extract Maclean. This led to Maclean and Guy Burgess' flight in May 1951 to Moscow, where they lived the remainder of their lives.

Guy Burgess

Guy Burgess served as a British diplomat during the developing bomb project in the United States. He became a Soviet informant after beginning his studies at the University of Cambridge, where he and his classmates (Kim Philby, Anthony Blunt, and Donald Maclean) began developing ideals against a capitalist society. Burgess began developing connections throughout college as well as his future careers. He would continue to pass on information as a BBC Radio correspondent, an MI6 intelligence officer, and as a member of the British Foreign Office. When the Korean War began, Burgess and Philby passed on information regarding movements in Korea to Moscow. Philby had been working closely with British and American intelligence, and was able to be in proximity to any intelligence findings. When the VENONA Project uncovered Julius Rosenberg (LIBERAL) and his wife Ethel, the project posted that they knew of a British spy with the codename HOMER, which Philby knew to be Maclean. Philby (codename STANLEY) reached out to Burgess to remove Maclean to the Soviet Union. Burgess at this point, was overseas in Washington DC serving in the British Foreign Office, and couldn't do much. In 1950, he was sent back to Britain due to "bad behavior", where he was able to warn Maclean. Burgess knew he was under suspicion by MI5, British counterintelligence, and Scotland Yard's Special Branch. Both Philby and Burgess knew that out of all of the possible people to crack under pressure, Maclean was the easy choice. When Burgess finally convinced Maclean to leave, they fled to Moscow, followed by Philby shortly after.

Soviet espionage in Australia

In addition to British and American operatives, Australians collected Venona intercepts at a remote base in the Australian Outback. The Soviets remained unaware of this base as late as 1950.

The founding of the Australian Security Intelligence Organisation (ASIO) by Labor Prime Minister Ben Chifley in 1949 was considered highly controversial within Chifley's own party. Until then, the left-leaning Australian Labor Party had been hostile to domestic intelligence agencies on civil-liberties grounds and a Labor government founding one seemed a surprising about-face. But the presentation of Venona material to Chifley, revealing evidence of Soviet agents operating in Australia, brought this about. As well as Australian diplomat suspects abroad, Venona had revealed Walter Seddon Clayton (cryptonym "KLOD"), a leading official within the Communist Party of Australia (CPA), as the chief organizer of Soviet intelligence gathering in Australia. Investigation revealed that Clayton formed an underground network within the CPA so that the party could continue to operate if it were banned. In 1950, George Ronald Richards was appointed ASIO's deputy-director of operations for Venona, based in Sydney, charged with investigating intelligence that uncovered the eleven Australians identified in the cables that had been decoded. He continued Venona-related work in London with MI5 from November 1952 and went on to lead Operation Cabin 12, the high-profile 1953–1954 defection to Australia of Soviet spy Vladimir Petrov.

Public disclosure

For much of its history, knowledge of Venona was restricted even from the highest levels of government. Senior army officers, in consultation with the FBI and CIA, made the decision to restrict knowledge of Venona within the government (even the CIA was not made an active partner until 1952). Army Chief of Staff Omar Bradley, concerned about the White House's history of leaking sensitive information, decided to deny President Truman direct knowledge of the project. The president received the substance of the material only through FBI, Justice Department, and CIA reports on counterintelligence and intelligence matters. He was not told the material came from decoded Soviet ciphers. To some degree this secrecy was counter-productive; Truman was distrustful of FBI head J. Edgar Hoover and suspected the reports were exaggerated for political purposes.

Some of the earliest detailed public knowledge that Soviet code messages from World War II had been broken came with the release of Chapman Pincher's book, Too Secret Too Long, in 1984. Robert Lamphere's book, The FBI-KGB War, was released in 1986. Lamphere had been the FBI liaison to the code-breaking activity and had considerable knowledge of Venona and the counter-intelligence work that resulted from it. However, the first detailed account of the Venona project, identifying it by name and making clear its long-term implications in post-war espionage, was contained in MI5 assistant director Peter Wright's 1987 memoir, Spycatcher.

Many inside the NSA had argued internally that the time had come to publicly release the details of the Venona project, but it was not until 1995 that the bipartisan Commission on Government Secrecy, with Senator Moynihan as chairman, released Venona project materials. Moynihan wrote:

secrecy system has systematically denied American historians access to the records of American history. Of late we find ourselves relying on archives of the former Soviet Union in Moscow to resolve questions of what was going on in Washington at mid-century. ... the Venona intercepts contained overwhelming proof of the activities of Soviet spy networks in America, complete with names, dates, places, and deeds.

One of the considerations in releasing Venona translations was the privacy interests of the individuals mentioned, referenced, or identified in the translations. Some names were not released because to do so would constitute an invasion of privacy. However, in at least one case, independent researchers identified one of the subjects whose name had been obscured by the NSA.

The dearth of reliable information available to the public—or even to the President and Congress—may have helped to polarize debates of the 1950s over the extent and danger of Soviet espionage in the United States. Anti-Communists suspected many spies remained at large, perhaps including some known to the government. Those who criticized the governmental and non-governmental efforts to root out and expose Communists in the United States felt these efforts were an overreaction (in addition to other reservations about McCarthyism). Public access—or broader governmental access—to the Venona evidence would certainly have affected this debate, as it is affecting the retrospective debate among historians and others now. As the Moynihan Commission wrote in its final report:

A balanced history of this period is now beginning to appear; the Venona messages will surely supply a great cache of facts to bring the matter to some closure. But at the time, the American Government, much less the American public, was confronted with possibilities and charges, at once baffling and terrifying.

The National Cryptologic Museum features an exhibit on the Venona project in its "Cold War/Information Age" gallery.

Texas textbook controversy

Controversy arose in 2009 over the Texas State Board of Education's revision of their high school history class curricula to suggest Venona shows Senator Joseph McCarthy to have been justified in his zeal in exposing those whom he believed to be Soviet spies or communist sympathizers. Critics such as Emory University history professor Harvey Klehr assert most people and organizations identified by McCarthy, such as those brought forward in the Army-McCarthy hearings or rival politicians in the Democratic party, were not mentioned in the Venona content and that his accusations remain largely unsupported by evidence.

Critical views

The majority of historians are convinced of the historical value of the Venona material. Intelligence historian Nigel West believes that "Venona remain an irrefutable resource, far more reliable than the mercurial recollections of KGB defectors and the dubious conclusions drawn by paranoid analysts mesmerized by Machiavellian plots." However, a number of writers and scholars have taken a critical view of the translations. They question the accuracy of the translations and the identifications of cryptonyms that the NSA translations give. Writers Walter and Miriam Schneir, in a lengthy 1999 review of one of the first book-length studies of the messages, object to what they see as the book's overconfidence in the translations' accuracy, noting that the undecrypted gaps in the texts can make interpretation difficult, and emphasizing the problem of identifying the individuals mentioned under cryptonyms. To support their critique, they cite a declassified memorandum, written in 1956 by A. H. Belmont, who was assistant to FBI director J. Edgar Hoover at the time.

In the memo, Belmont discusses the possibility of using the Venona translations in court to prosecute Soviet agents and comes out strongly opposed to their use. His reasons include legal uncertainties about the admissibility of the translations as evidence, and the difficulties that prosecution would face in supporting the validity of the translations. Belmont highlights the uncertainties in the translation process, noting that the cryptographers have indicated that "almost anything included in a translation of one of these deciphered messages may in the future be radically revised." He also notes the complexities of identifying people with cryptonyms, describing how the personal details mentioned for cryptonym "Antenna" fit more than one person, and the investigative process required to finally connect "Antenna" to Julius Rosenberg. The Schneirs conclude that "A reader faced with Venona's incomplete, disjointed messages can easily arrive at a badly skewed impression."

Many of the critiques of the Venona translations have been based on specific cases. The Schneirs' critique of the Venona documents was based on their decades of work on the case of Ethel and Julius Rosenberg. Another critique of the Venona translations came from the late Rutgers University law professor John Lowenthal, who as a law student worked as a volunteer for Alger Hiss's defense team, and later wrote extensively on the Hiss case. Lowenthal's critique focused on one message (Venona 1822 KGB Washington-Moscow 30 March 1945), in which the comments identified the cryptonym 'Ales' as "probably Alger Hiss." Lowenthal raised a number of objections to this identification, rejecting it as "a conclusion psychologically motivated and politically correct but factually wrong." Lowenthal's article led to an extended debate on the 'Ales' message, and even prompted the NSA to declassify the original Russian text. Currently, Venona 1822 is the only message for which the complete decrypted Russian text has been published.

Victor Navasky, editor and publisher of The Nation, has also written several editorials highly critical of Haynes' and Klehr's interpretation of recent work on the subject of Soviet espionage. Navasky claims the Venona material is being used to "distort ... our understanding of the cold war" and that the files are potential "time bombs of misinformation." Commenting on the list of 349 Americans identified by Venona, published in an appendix to Venona: Decoding Soviet Espionage in America, Navasky wrote, "The reader is left with the implication—unfair and unproven—that every name on the list was involved in espionage, and as a result, otherwise careful historians and mainstream journalists now routinely refer to Venona as proof that many hundreds of Americans were part of the red spy network." Navasky goes further in his defense of the listed people and has claimed a great deal of the so-called espionage that went on was nothing more than "exchanges of information among people of good will" and that "most of these exchanges were innocent and were within the law."

According to historian Ellen Schrecker, "Because they offer insights into the world of the secret police on both sides of the Iron Curtain, it is tempting to treat the FBI and Venona materials less critically than documents from more accessible sources. But there are too many gaps in the record to use these materials with complete confidence." Schrecker believes the documents established the guilt of many prominent figures but is still critical of the views of scholars such as Haynes, arguing, "complexity, nuance, and a willingness to see the world in other than black and white seem alien to Haynes' view of history."

See also

Notes

  1. Benson 2001, pp. 7–8.
  2. Benson 2001, p. 5.
  3. Benson 2001, p. 14.
  4. Benson 2001, p. 34.
  5. Benson 2001, pp. 20–22.
  6. Benson, Robert L. "The Venona Story" (PDF). www.nsa.gov. p. 1. Retrieved November 9, 2024.
  7. "Venona: Soviet Espionage and The American Response, 1939-1957 - CSI". www.cia.gov. Retrieved November 9, 2024.
  8. "Venona Documents". www.nsa.gov. Retrieved November 9, 2024.
  9. Andrew, Christopher (1996). For the President's Eyes Only: Secret Intelligence and the American Presidency from Washington to Bush. Harper Perennial. ISBN 978-0-06-017037-0.
  10. How VENONA was Declassified, Robert Louis Benson, Symposium of Cryptologic History; October 27, 2005.
  11. "Tangled Treason", Sam Tanenhaus, The New Republic, 1999.
  12. ^ Navasky, Victor (July 16, 2001). "Cold War Ghosts". The Nation. Retrieved June 27, 2006.
  13. ^ "Tales from decrypts," The Nation, 28 October 1996, pp. 5–6.
  14. Schrecker, Ellen. "Comments on John Earl Haynes', "The Cold War Debate Continues: A Traditionalist View of Historical Writing on Domestic Communism and Anti-Communism"". Retrieved June 27, 2006.
  15. Crowell, William P. (July 11, 1995). "Remembrances of Venona". nsa.gov. Archived from the original on March 5, 2016. Retrieved February 7, 2016.
  16. "Venona: Soviet Espionage and the American Response, 1939-1957". CIA. Archived from the original on August 16, 2000. Retrieved August 8, 2022. Meredith Gardner kept his British counterpart abreast of developments, and from 1948 on there was complete and profitable US-UK cooperation on the problem. The control term "Venona" did not appear on the translated messages until 1961. In the beginning the information was usually called the "Gardner material," and a formal control term "Bride" was finally affixed in 1950. From the late 1950s to 1961 the control term was "Drug".
  17. Benson 2001, p. 59: "VENONA was the final NSA codeword for this very secret program. Earlier codewords had been JADE, BRIDE, and DRUG."
  18. Benson 2001, p. 1.
  19. Gilbert, James Leslie; Finnegan, John Patrick, eds. (1993). "Accepting the challenge". U.S. Army Signals Intelligence in World War II: a documentary history. Washington, DC: United States Army Center of Military History. p. 48. ISBN 978-0-16-037816-4.
  20. John Earl Haynes; Harvey Klehr (1999). "Venona". Venona – Decoding Soviet Espionage in America. Yale University Press. Retrieved February 15, 2014 – via The New York Times Books.
  21. Modin 1994, p. 194.
  22. Cryptologic Almanac 50th Anniversary Series – VENONA: An Overview (DOCID: 3575728) Archived 2016-03-04 at the Wayback Machine. Released by NSA on 06-12-2009, FOIA Case # 52567.
  23. "Women in Cryptologic History – Genevieve Feinstein – NSA/CSS". Nsa.gov. January 15, 2009. Retrieved February 15, 2014.
  24. Francis Litterio. "Why Are One-Time Pads Perfectly Secure?". Archived from the original on May 16, 2008.
  25. "Marie Meyer > National Security Agency | Central Security Service > Article View". www.nsa.gov. Retrieved November 21, 2019.
  26. Daniel Patrick Moynihan (1997). "Report of the Commission On Protecting And Reducing Government Secrecy; Appendix A: The Experience of The Bomb". United States Government Printing Office. Retrieved June 18, 2006.
  27. Mundy, Liza (2017). Code girls: the untold story of the American women code breakers of World War II (1st ed.). Boston: Hachette Books. p. 38. ISBN 978-0-316-35253-6.
  28. West, Nigel (2000). Venona: the greatest secret of the Cold War. London: HarperCollins. pp. 3–10. ISBN 978-0-00-653071-8.
  29. Haynes, John Earl & Klehr, Harvey (2000). Venona: Decoding Soviet Espionage in America. Yale University Press. p. 55. ISBN 978-0-300-08462-7.
  30. ^ "Manhattan Project: The Venona Intercepts". www.osti.gov. Retrieved October 10, 2023.
  31. Moynihan, Daniel Patrick (1998). Secrecy: The American Experience. Yale University Press. p. 54. ISBN 978-0-300-08079-7. "these intercepts provided ... descriptions of the activities of precisely the same Soviet spies who were named by defecting Soviet agents Alexander Orlov, Walter Krivitsky, Whittaker Chambers and Elizabeth Bentley."
  32. Commission on Protecting and Reducing Government Secrecy. "A Brief Account of the American Experience" (PDF). Report of the Commission on Protecting and Reducing Government Secrecy. VI; Appendix A. US Government Printing Office. pp. A–27. Archived from the original (PDF) on May 14, 2011. Retrieved June 26, 2006. "Thanks to successful espionage, the Russians tested their first atom bomb in August 1949, just four years after the first American test. As will be discussed, we had learned of the Los Alamos spies in December 1946—December 20, to be precise. The US Army Security Agency, in the person of Meredith Knox Gardner, a genius in his own right, had broken one of what it termed the Venona messages—the transmissions that Soviet agents in the United States sent to and received from Moscow."
  33. Commission on Protecting and Reducing Government Secrecy. "A Brief Account of the American Experience" (PDF). Report of the Commission on Protecting and Reducing Government Secrecy. VI; Appendix A. US Government Printing Office. pp. A–7. Archived from the original (PDF) on May 14, 2011. Retrieved June 26, 2006. "KGB cables indicated that the Office of Strategic Services (OSS) in World War II had been thoroughly infiltrated with Soviet agents."
  34. "Eavesdropping on Hell" (PDF). National Security Agency. Archived from the original (PDF) on November 8, 2017. Retrieved June 26, 2006. "Currie, known as PAZh (Page) and White, whose cover names were YuRIST (Jurist) and changed later to LAJER (Lawyer), had been Soviet agents since the 1930s. They had been identified as Soviet agents in Venona translations and by other agents turned witnesses or informants for the FBI and Justice Department. From the Venona translations, both were known to pass intelligence to their handlers, notably the Silvermaster network."
  35. Warner, Michael (2000). "The Office of Strategic Services: America's First Intelligence Agency; Chapter: X-2". Central Intelligence Agency Publications. Archived from the original on June 29, 2006. Retrieved June 27, 2006.
  36. Moynihan, Daniel Patrick (1998). Secrecy: The American Experience. Yale University Press. p. 54. ISBN 978-0-300-08079-7.
  37. Haynes, John Earl & Klehr, Harvey (2000). Venona: Decoding Soviet Espionage in America. Yale University Press. p. 12. ISBN 978-0-300-08462-7.
  38. Warner, Michael (2000). "The Office of Strategic Services: America's First Intelligence Agency; Chapter: X-2". Central Intelligence Agency Publications. Archived from the original on May 10, 2007. Retrieved June 26, 2006.
  39. Nigel West, Venona, największa tajemnica zimnej wojny, Warszawa 2006, p.138.
  40. Eduard Mark. "Venona's Source 19 and the Trident Conference of May 1943: Diplomacy or Espionage?". Intelligence and National Security. London, Summer 1998, pp. 1–31
  41. Romerstein, Herbert & Breindel, Eric (2000). The Venona Secrets: Exposing Soviet Espionage and America's Traitors. Regnery Publishing. p. 214. ISBN 978-0-89526-275-2.
  42. Haynes, John Earl & Klehr, Harvey (1999). Venona: Decoding Soviet Espionage in America. Yale University Press. pp. 205–206. ISBN 978-0-300-07771-1.
  43. "H-Net Discussion Networks - VENONA, the KGB, and Harry Hopkins [Haynes/Klehr]". H-Diplo. July 14, 1999. Retrieved February 15, 2014.
  44. Klehr, Harvey; Haynes, John Earl (November 2, 2014). "Harry Hopkins and Soviet Espionage". Intelligence and National Security. 29 (6): 864–879. doi:10.1080/02684527.2014.913403. ISSN 0268-4527.
  45. The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB, by Vasily Mitrokhin and Christopher Andrew.
  46. KGB: The Inside Story of Its Foreign Operations from Lenin to Gorbachev, by Oleg Gordievsky and Christopher Andrew.
  47. Haynes, John Earl; Klehr, Harvey E.; Vassiliev, Alexander (2009). Spies: The Rise and Fall of the KGB in America. New Haven: Yale University Press. pp. 223-234. ISBN 978-0-300-12390-6.
  48. Haynes, John (2000). Venona: Decoding Soviet Espionage in America. New Haven, Connecticut: Yale University Press. ISBN 978-0-300-07771-1. Retrieved August 16, 2016. The Venona messages clearly display Julius Rosenberg's role as the leader of a productive ring of Soviet spies...they confirm that she was a participant in her husband's espionage and in the recruitment of her brother for atomic espionage. But they suggest that she was essentially an accessory to her husband's activity, having knowledge of it and assisting him but not acting as a principal.
  49. Haynes, John Earl; Klehr, Harvey E.; Vassiliev, Alexander (2009). Spies: The Rise and Fall of the KGB in America. New Haven: Yale University Press. pp. 73, 339. ISBN 978-0-300-12390-6.
  50. Vassiliev-Notebooks-and-Venona-Index-Concordance.pdf, ed. 2013, pp: 325, 343
  51. ^ McFadden, Robert D. (October 14, 2014). "David Greenglass, the Brother Who Doomed Ethel Rosenberg, Dies at 92". The New York Times. ISSN 0362-4331. Retrieved April 18, 2024.
  52. Markowitz, Gerald E.; Meeropol, Michael (1980). "The "Crime of the Century" Revisited: David Greenglass' Scientific Evidence in the Rosenberg Case". Science & Society. 44 (1): 1–26. ISSN 0036-8237. JSTOR 40402217.
  53. ^ Benson 2001, p. 16.
  54. ^ Goodman, Michael S. (2003). "The grandfather of the hydrogen bomb?: Anglo-American intelligence and Klaus Fuchs". Historical Studies in the Physical and Biological Sciences. 34 (1): 1–22. doi:10.1525/hsps.2003.34.1.1. ISSN 0890-9997. JSTOR 10.1525/hsps.2003.34.1.1.
  55. "NSA, 2013" (PDF).
  56. Haynes, John Earl; Klehr, Harvey (1999). Venona: Decoding Soviet Espionage in America. Yale University Press. ISBN 978-0-300-07771-1. JSTOR j.ctt1npk87.
  57. "Subject T. Black". vault.fbi.gov.
  58. Hornblum, Allen M. (2010). The Invisible Harry Gold: The Man Who Gave the Soviets the Atom Bomb. Yale University Press. doi:10.2307/j.ctt1npnvb. ISBN 978-0-300-15676-8. JSTOR j.ctt1npnvb.
  59. "FBI Records: The Vault — Abraham Brothman Part 01 of 66".
  60. Alfred Slack
  61. "Appendix A; SECRECY; A Brief Account of the American Experience" (PDF). United States Government Printing Office. 1997. pp. A–37. Archived from the original (PDF) on June 29, 2007.
  62. "Report Of The Commission On Protecting And Reducing Government Secrecy" Archived 2011-07-21 at the Wayback Machine
  63. Linder, Douglas (2003). "The Venona Files and the Alger Hiss Case". Archived from the original on August 30, 2006. Retrieved June 27, 2006.
  64. Moynihan, Daniel Patrick (1998). Secrecy: The American Experience. Yale University Press. pp. 145–147. ISBN 978-0-300-08079-7.
  65. Philipps, Roland. 2018. A Spy Named Orphan: The Enigma of Donald Maclean. New York: W.W. Norton & Company.
  66. Modin 1994, pp. 190–199.
  67. Purvis, Stewart (January 28, 2016). Guy Burgess: The Spy Who Knew Everyone. Biteback Publishing.
  68. "Guy Burgess | British Diplomat and Spy for the Soviet Union | Britannica". www.britannica.com. February 19, 2024. Retrieved April 18, 2024.
  69. Perry, Roland (2005). Last of the Cold War Spies: The Life of Michael Straight. Da Capo Press.
  70. Hamrick, SJ (2004). Deceiving the Deceivers: Kim Philby, Donald Maclean, and Guy Burgess. Yale University Press.
  71. Modin 1994, p. 191.
  72. Andrew, Christopher. "The Defence of the Realm. The Authorized History of MI5", 2008. ISBN 978-0-14-102330-4, p. 371
  73. Cain, Frank. "George Ronald (Ron) Richards (1905–1985)". Richards, George Ronald (Ron) (1905–1985). Australian Dictionary of Biography. National Centre of Biography, Australian National University. Retrieved January 13, 2018.
  74. Moynihan, Daniel Patrick (1998). Secrecy: The American Experience. Yale University Press. p. 15. ISBN 978-0-300-08079-7.
  75. Benson, Robert Louis. "Venona Historical Monograph #4: The KGB in San Francisco and Mexico City and the GRU in New York and Washington". National Security Agency Archives, Cryptological Museum. Retrieved June 18, 2006.
  76. "Historians speak out against proposed Texas textbook changes | National Council for the Social Studies". Socialstudies.org. March 18, 2010. Retrieved February 15, 2014.
  77. "Rehabilitating Joseph McCarthy?". TFN Insider. October 29, 2009. Retrieved July 26, 2016.
  78. West, Nigel (1999). Venona: The Greatest Secret of the Cold War. Harper Collins. p. 330. ISBN 978-0-00-653071-8.
  79. Schneir, Walter; Miriam Schneir (July 5, 1999). "Cables coming in from the cold (Review of Venona: Decoding Soviet Espionage in America, by John Earl Haynes and Harvey Klehr)". Nation. 269 (1): 25–30. ISSN 0027-8378. Retrieved October 3, 2013.
  80. The memo is now available on line at "FBI Records on Venona". FBI Records: The Vault. Retrieved October 3, 2013.
  81. Schneir, Walter; Miriam Schneir (July 5, 1999). "Cables coming in from the cold. (Review of Venona: Decoding Soviet Espionage in America, by John Earl Haynes and Harvey Klehr)". Nation. 269 (1): 28. ISSN 0027-8378. Retrieved October 3, 2013.
  82. For Lowenthal's work on the Hiss case see the Alger Hiss Story Archived 2013-06-03 at the Wayback Machine website, hosted at NYU.
  83. Available at the NSA's Venona website.
  84. Lowenthal, John (2000). "Venona and Alger Hiss". Intelligence and National Security. 15 (3): 98–130. doi:10.1080/02684520008432619. S2CID 154475407.
  85. The first response to Lowenthal was Mark, Eduard (2003). "Who was 'Venona's' 'Ales'? cryptanalysis and the Hiss case". Intelligence and National Security. 18 (3): 45–72. doi:10.1080/02684520412331306920. S2CID 154152581. Following this there was an extended discussion on h-net diplo list and the h-net list for the history of American communism. For a summary of a draft response from Lowenthal (he died in 2003) see Lowenthal, David; Roger Sandilands (2005). "Eduard Mark on Venona's 'Ales': A note". Intelligence and National Security. 20 (3): 509–512. doi:10.1080/02684520500269051. S2CID 150719055. Another response following this was Bird, Kai; Svetlana Chervonnaya (2007). "The Mystery of Ales (Expanded Version)". The American Scholar. This gave rise to a conference paper: Haynes, John Earl; Harvey Klehr (October 19, 2007). "Ales is Still Hiss: The Wilder Foote Red Herring". Archived from the original on July 28, 2012. (archived version) and finally a response from Mark again (he died in 2009): Mark, Eduard (2009). "In Re Alger Hiss". Journal of Cold War Studies. 11 (3): 26–67. doi:10.1162/jcws.2009.11.3.26. S2CID 57560522.
  86. See Schindler, John R. (October 27, 2005). "Hiss in VENONA: The Continuing Controversy". Archived from the original on June 3, 2013. (archived version).
  87. Schrecker, Ellen (1998). Many are the Crimes: McCarthyism in America. Little, Brown. pp. xvii–xviii. ISBN 978-0-316-77470-3.
  88. Schrecker, Ellen. "Comments on John Earl Haynes', "The Cold War Debate Continues: A Traditionalist View of Historical Writing on Domestic Communism and Anti-Communism"". Retrieved June 27, 2006.

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