This groundbreaking historical study reveals the shocking infiltration of Soviet spies in America—and the top-secret cryptography program that caught them. On
The Venona Secretspresents one of the last great, untold stories of World War II and the Cold War. In 1995, secret Soviet cable traffic from the 1940s that the
On February 1, 1943, the U.S. Army's Signal Intelligence Service, a forerunner of the National Security Agency, began a small, very secret program, later codena
This sensational book, edited by NSA and CIA officers, reveals U.S. "code-breaking" successes in reading KGB and GRU messages during the Cold War. The cryptanal