Robert Hanssen is a former FBI agent who was convicted of spying against the U.S., for the Russian intelligence agencies. Hanssen reportedly sold countless classified documents containing U.S. nuclear and military strategies. He pleaded guilty to avoid the death penalty. He eventually received 15 life sentences, without parole.
3 Anna Chapman(Media Personality)
Anna Chapman is a Russian intelligence agent, media personality, and model. In 2010, she was arrested in US as part of the Illegals Program spy ring. She was later deported to Russia as part of a prisoner swap. Since her return, she has hosted TV shows, worked as a catwalk model, and served as the head of a youth council.
4 Clyde Tolson(Associate Director of the FBI)
5 Aldrich Ames(Former CIA Officer & Agent for the Soviet Union & Russia)
Aldrich Ames is a former CIA officer who later became a KGB double agent. He was convicted of spying and is currently serving a life sentence. He allegedly worked as a Soviet spy and revealed classified CIA data. He inspired the 1998 film Aldrich Ames: Traitor Within.
6 Oleg Gordievsky(Secret Double Agent)
7 E. Howard Hunt(Author, Intelligence officer)
8 Noshir Gowadia(Spy, Engineer)
9 David Greenglass(Spy)
10 Edwin P. Wilson(Businessman)
11 Miles Copeland, Jr.(Musician, businessman, CIA founder)
12 Eileen Nearne(Spy)
13 Pearl Cornioley(British wartime agent)
14 Alan Nunn May(Physicist)
British physicist Alan Nunn May went down in history as a traitor who betrayed Britain and the U.S. by passing on confidential information about the Manhattan Project, or the development of the atom bomb, to the Soviet Union, as a spy. Sentenced to 10 years of hard labor, he served 6.