VENONA was the U.S. Army Signal Intelligence Service (later NSA) project that decrypted thousands of Soviet intelligence cables, exposing extensive Cold War espionage in the United States. The decrypts and accompanying analysis were declassified in 1995.

Search the declassified VENONA material below.

What you’ll find

• Decrypted Soviet intelligence cables
• Counterintelligence analysis and cover-name identifications
• NSA cryptologic history of the project