Feb. 20 -- Accused spy Robert Hanssen was arrested under dramatic circumstances on Sunday, but the FBI's investigation of him involved months of less glamorous legwork. Concluding a four-month ...

This 2007 spy thriller is based on the true story of Robert Hanssen, the man at the heart of what has been described as “possibly the worst intelligence disaster in U.S. history.” ...

Robert Hanssen, 79, was found unresponsive in his cell at a federal prison in Florence, Colorado, and later pronounced dead, prison officials said.

Hanssen, who spied between 1979 and 2001, was sentenced in May 2002 to life in prison after pleading guilty. Hanssen's actions led to the deaths of at least three U.S. spies overseas.

When my source was revealed as a spy, my first fear was that I had been the victim of disinformation by a truly evil man. I wrote my column of Nov. 24, 1997, only after other officials confirmed ...

WASHINGTON (AP) — Robert Hanssen, a former FBI agent who took more than $1.4 million in cash and diamonds to trade secrets with Moscow in one of the most notorious spying cases in American ...

NPR's Michel Martin talks to journalist Tim Weiner about FBI agent-turned Soviet spy Robert Hanssen, who died this week in prison. His actions led to the deaths of numerous U.S. Operatives.

If Hanssen used Intelink -- a system that did not exist at the time of the arrest of CIA spy Aldrich H. Ames in 1994 -- the damage could be deep and difficult to assess, intelligence officials said.

This 2007 spy thriller is based on the true story of Robert Hanssen, the man at the heart of what has been described as “possibly the worst intelligence disaster in U.S. history.” ...