What British intelligence officer worked as a double agent for the Soviet Union and was recruited by Arnold Deutsch?
Arnold Deutsch Arnold Deutsch (1903–1942?), variously described as Austrian, Czech or Hungarian, was an academic who worked as a Soviet spy, best known for having recruited Kim Philby. Much of his life remains unknown or disputed.
Jack Barsky Jack Philip Barsky (born Albrecht Dittrich, 13 November 1949) is a German-American author, IT specialist and former sleeper agent of the KGB who spied on the United States from 1978–88. Exposed after the Cold War, Barsky became a resource for U.S. counterintelligence agencies and was allowed to remain in the United States. His autobiography, "Deep Undercover", was published in 2017, and he frequently speaks on his experiences and as an expert on espionage.