Vladimir Vetrov
Vladimir Ippolitovich Vetrov (Russian: Владимир Ипполитович Ветров; 10 October 1932 – 23 January 1985) was a high-ranking KGB spy during the Cold War who decided to covertly release valuable information to France and NATO on the Soviet Union's clandestine program aimed at stealing technology from the West. Vetrov was assigned the code-name Farewell by the French intelligence service DST, which recruited him. He was known by that name throughout NATO's intelligence services. The code-name was chosen as an English word so that the KGB would assume he worked for the CIA if it learned his codename. His history inspired the book Bonjour Farewell: La Vérité sur la Taupe Française du KGB (1997) by Sergei Kostin.