<human>: Who are some famous people who were spies?
<bot>: Some famous people who were spies include Kim Philby, a British intelligence officer who was a member of the Cambridge Five and later became a double agent for the Soviet Union; Aldrich Ames, an American CIA counterintelligence officer who spied for the Soviet Union from 1985 until 1994; Robert Hanssen, a former FBI agent who spied for the Soviet Union from 1979 to 2001; and John Walker Lindh, an American citizen who joined the Taliban and served as a Taliban interpreter before being captured by US forces in 2001.