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W. Mark Felt An associate director at the (Credit: AP)

W. Mark Felt

An associate director at the FBI, he was Deep Throat, the source who gave information about Watergate to The Washington Post in the 1970s. He unmasked himself in 2005.

Famous information leakers throughout history

Edward Snowden, 29, an American intelligence contractor, has revealed himself as the source who disclosed the U.S. government's secret phone and Internet surveillance programs. Here are some other famous "leakers" in recent history. -- AP

Daniel Ellsberg A military analyst, he passed the
(Credit: AP)

Daniel Ellsberg

A military analyst, he passed the Pentagon Papers — a secret Defense Department study of U.S. involvement in Vietnam — on to The New York Times and other newspapers in 1971.

W. Mark Felt An associate director at the
(Credit: AP)

W. Mark Felt

An associate director at the FBI, he was Deep Throat, the source who gave information about Watergate to The Washington Post in the 1970s. He unmasked himself in 2005.

Mordechai Vanunu He was an Israeli nuclear technician
(Credit: AP)

Mordechai Vanunu

He was an Israeli nuclear technician in 1986 when he revealed Israel's nuclear weapons program. He served 18 years in prison.

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Frederic Whitehurst Beginning in 1992, the FBI agent
(Credit: AP)

Frederic Whitehurst

Beginning in 1992, the FBI agent exposed shoddy work and inaccurate testimony from the bureau's crime lab.

Jeffrey Wigand A Brown & Williamson tobacco executive,
(Credit: AP)

Jeffrey Wigand

A Brown & Williamson tobacco executive, he cooperated with CBS' "60 Minutes" and the Food and Drug Administration in the 1990s in exposing cigarette manufacturers' practices.

Bradley Manning The U.S. Army private gave a
(Credit: AP)

Bradley Manning

The U.S. Army private gave a trove of classified military and diplomatic material to WikiLeaks. His court-martial is under way at Fort Meade, Md.

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