HANSSEN, Robert

The ConspiricometerYep, That Happened

FBI counterintelligence agent who conducted espionage for the Soviet Union and Russia from 1979 to 2001, considered one of the most damaging spy cases in U.S. history before his capture and life imprisonment.

Robert Philip Hanssen began his career with the FBI in 1976, specializing in counterintelligence operations targeting Soviet activities in the United States. His position provided access to some of America's most sensitive national security secrets, including the identities of Soviet double agents working for U.S. intelligence and details of technical surveillance operations.

Starting in 1979, Hanssen began selling classified information to Soviet intelligence agencies, motivated by a combination of financial gain and ideological grievances. He received over $1.4 million in cash and diamonds over 22 years, while providing the KGB and later Russian SVR with thousands of pages of classified documents, computer disks, and intelligence on U.S. operations.

Hanssen's betrayals led to the capture and execution of several Soviet sources working for the United States, including Sergei Motorin and Valery Martynov. He also revealed the existence of a secret tunnel under the Soviet embassy in Washington and compromised numerous technical intelligence-gathering operations, causing immeasurable damage to U.S. national security interests.

His espionage career ended in 2001 when the FBI, aided by a Russian intelligence source who provided Hanssen's KGB file, caught him making a dead drop at Foxstone Park in Virginia. He pleaded guilty to 15 counts of espionage and conspiracy in exchange for avoiding the death penalty, receiving life imprisonment without parole. Hanssen died in federal prison in 2023, having served 21 years of his sentence.

Another entry in this category is AMES, Aldrich.

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