Barton David Gellman is an American author and journalist known for his reports on the September 11 attacks, on Dick Cheney's vice presidency, and on the global surveillance disclosure. Beginning in June 2013, he authored The Washington Post's coverage of the U.S. National Security Agency, based on top secret documents provided to him by ex-NSA contractor Edward Snowden. He published a book for Penguin Press on the rise of the surveillance-industrial state in May 2020, and joined the staff of The Atlantic.
