Robert Hanssen | American law enforcement agent and spy
Last Updated: Alternative Title: Robert Philip Hanssen Robert Hanssen, in full Robert Philip Hanssen, (born April 18, 1944, Chicago, Illinois, U.S.), agent of the U.S. Federal Bureau of Investigation (FBI) who was one of the Soviet Union’s and Russia’s most valuable double agents and the most damaging spy ever to penetrate the FBI. Hanssen was the son of a police officer. He received a bachelor’s degree from Knox College in Galesburg, Illinois, where he majored in chemistry but...
Source: britannica.com