The greatest secret of the Second World War has remained a mystery for the last 80 years: a Jewish Communist, Sandor Rado, led a spy network that proved essential to the victory of Allied Forces. Rado received details of strictly confidential strategies from the highest echelons of the Nazi State through Rudolf Roessler, a dedicated anti-Nazi he'd only known as code name "Lucy." Aided by key German industry leaders, Roessler transmitted timely information from high-ranking collaborators within the German army headquarters. Despite their achievement, Rado, Roessler and their sources remained unacknowledged heroes until today. Thanks to the recent declassification of secret archives, we are now able to step behind the scenes of this incredible story.
During the worst days of World War II, the British government asks the mathematician Alan Turing to unravel the mysteries of the German Enigma encryption machine, an impossible task to accomplish without the invaluable information that Hans-Thilo Schmidt, a disenchanted but greedy German citizen, had been handing over to the French secret services since 1931.
"The Farewell Affair" is one of the greatest espionage stories of the Cold War that will result in the accelerated fall of the USSR. It involves Vladimir Vetrov, a KGB agent put in the closet, who decides to contact the DST and deliver several lists of technological and scientific agents and secrets, which the KGB has been stealing from the countries of the Western Blocs for decades.
The "For Official Use Only" 2006 training video produced by the Defense Intelligence Agency (DIA) about the case of Ana Belén Montes, a Cuban spy who rose to become DIA's top analyst for Cuban affairs. She was trained by Cuban intelligence in polygraph countermeasures and passed a DIA polygraph screening "test" while spying for Cuba. Includes interviews with Montes' colleagues at DIA. The video mentions (at 16:31) that she used polygraph countermeasures to pass a 1994 DIA polygraph screening "test," which facilitated her espionage: The polygraph test in 1994 made her even more dangerous. By deflecting suspicion away from her, she was freer to pursue her espionage. And to pass the polygraph, she had used a countermeasure taught to her by the Cubans.