The Canadian Encyclopedia — neutral, cited, updated
July 27, 2026Sources cited
Canadianwire.
Canada’s encyclopedia & explainer
Home›Crime & Justice›Spy›Robert Hanssen
Crime & Justice • Spy

Robert Hanssen

Robert Philip Hanssen was an American FBI special agent who spied for the Soviet Union and later Russia from the late 1970s until his arrest in 2001.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Robert Philip Hanssen was an American FBI special agent who spied for the Soviet Union and later Russia from the late 1970s until his arrest in 2001. He was convicted of espionage and sentenced to life in prison without parole, and he died in federal custody in 2023.

Early life and FBI career

Hanssen was born in Chicago in 1944 and joined the FBI in 1976. He worked as a special agent in counterintelligence before becoming known for espionage against the United States.

Espionage for the Soviet Union and Russia

According to the FBI, Hanssen supplied classified information to Soviet and later Russian intelligence services over many years. His leaks included sensitive national security material and information that damaged U.S. intelligence operations.

Arrest, conviction, and sentence

Hanssen was arrested on February 18, 2001, and pleaded guilty to 15 counts of espionage in July 2001. He was sentenced in 2002 to life in prison without the possibility of parole and was held at ADX Florence in Colorado.

Death in custody

Hanssen died in federal prison on June 5, 2023, at age 79. Reports stated he was found unresponsive in his cell in Florence, Colorado.

Key facts

  • Hanssen joined the FBI in 1976 and became one of the most damaging spies in the Bureau's history.
  • He passed highly classified U.S. national security information to Soviet and Russian handlers in exchange for cash, bank funds, and diamonds.
  • He was arrested in February 2001 and pleaded guilty to 15 counts of espionage in July 2001.
  • He was sentenced to life in prison without parole and died in federal custody in June 2023 at age 79.
🍁
Canadian context

Hanssen’s case is relevant to Canadian readers because major U.S. counterintelligence failures involving Soviet and Russian espionage affected North American security cooperation and intelligence sharing.

Frequently asked questions

Who was Robert Hanssen?
He was an FBI special agent who was convicted of spying for the Soviet Union and Russia.
When was Robert Hanssen arrested?
He was arrested on February 18, 2001.
What was Robert Hanssen convicted of?
He pleaded guilty to 15 counts of espionage in 2001.
What sentence did Robert Hanssen receive?
He was sentenced to life in prison without the possibility of parole.
When did Robert Hanssen die?
He died on June 5, 2023, in federal custody.
Why is Robert Hanssen significant?
The FBI describes him as the most damaging spy in Bureau history.

References

  1. Federal Bureau of Investigation — https://www.fbi.gov/history/famous-cases/robert-hanssen
    Supports: Career, espionage activity, arrest, plea, sentence, death, and FBI characterization.
  2. Encyclopaedia Britannica — https://www.britannica.com/biography/Robert-Hanssen
    Supports: Birth, death, FBI role, and significance as a major double agent.
  3. CNN — https://www.cnn.com/2023/06/05/politics/robert-hanssen/index.html
    Supports: Death in custody, age, payments received, and conviction details.
  4. BBC News — https://www.bbc.com/news/world-us-canada-65820220
    Supports: Arrest, prison sentence, and death in prison.