Venona


The U.S. Army's Signal Intelligence Service, the precursor to the National Security Agency, began a secret program in February 1943 later codenamed VENONA

The mission of this small program was to examine and exploit Soviet diplomatic communications but after the program began, the message traffic included espionage efforts as well.

Although it took almost two years before American cryptologists were able to break the KGB encryption, the information gained through these transactions provided U.S. leadership insight into Soviet intentions and treasonous activities of government employees until the program was canceled in 1980.

The VENONA files are most famous for exposing Julius (code named LIBERAL) and Ethel Rosenberg and help give indisputable evidence of their involvement with the Soviet spy ring.

The first of six public releases of translated VENONA messages was made in July 1995 and included 49 messages about the Soviets' efforts to gain information on the U.S. atomic bomb research and the Manhattan Project. Over the course of five more releases, all of the approximately 3,000 VENONA translations were made public.

ImageTitle
 24MAY_ANTON.PDFMention of covername ANTON 24 May (Release 4)
 11APR_THORNTON.PDFMention of covername THORNTON (professor M.V. Malyshev) 11 April 1943 (Release 4)
 19MAR_MENTION_DRUGS.PDFMention of drugs 19 March (Release 3)
 11MAR_BRIDGES.PDFMention of Harry Bridges; also of KGB agent Isaac Folkoff
 23OCT_FOLKOFF.PDFMention of KGB agent Isaac Folkoff 23 October 1943 (Release 4)
 12FEB_KATZ.PDFMention of KGB Senior Agent Joseph "Jack" Katz
 17FEB_KOLESNIKOV_ISACHENKOV.PDFMention of KOLESNIKOV and ISAChENKOV
 31MAR_MENTION_LENINGRAD.PDFMention of Leningrad, Stalingrad, Havana and expenses 31 March (Release 5)
 21APR_COMMUNIST_PARTY.PDFMention of Mexican Communist Party
 22APR_MISSING_PAGES.PDFMention of missing pages of a cipher pad 22 April (Release 4)
 22MAY_NATIONALITIES.PDFMention of Nationalities
 6MAR_NOVINSKIJ_LOZOVSKIJ.PDFMention of NOVINSKIJ and LOZOVSKIJ 6 March (Release 5)
 27JUN_MENTION_OSS.PDFMention of OSS 27 June (Release 3)
 5APR_PHILADELPHIA.PDFMention of Philadelphia 5 April (Release 3)
 29DEC_SAFE-CRACKING.PDFMention of safe-cracking at the annex 29 December 1942 (Release 5)
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