Breach is a 2007 film starring Chris Cooper, Ryan Phillippe, and Laura Linney.

The film is directed by Billy Ray and is based on the story of Eric O'Neill, an upstart FBI operative working under Robert Hanssen, an agent convicted of spying for the Soviet Union (and, after the collapse of the Soviet Union, Russia) for 15 years. The film debuted in the USA on February 16, 2007. The film's DVD was released on June 12, 2007. Breach is rated PG-13 for violence, sexual content and language.

In February, 2001, Robert Hanssen, a senior agent with 25 years in the FBI, is arrested for spying. Jump back two months: Eric O'Neill, a computer specialist who wants to be made an agent is assigned to clerk for Hanssen and to write down everything Hanssen does. O'Neill's told it's an investigation of Hanssen's sexual habits. Within weeks, the crusty Hanssen, a devout Catholic, has warmed to O'Neill, who grows to respect Hanssen. O'Neill's wife resents Hanssen's intrusiveness; the personal and professional stakes get higher. How they catch Hanssen and why he spies become the film's story. Can O'Neill help catch red-handed "the worst spy in history" and hold onto his personal life? Written by