Edward Joseph "Ed" Snowden is an American computer professional. A former systems administrator for the Central Intelligence Agency and a counterintelligence trainer at the Defense Intelligence Agency, he later went to work for the private intelligence contractor Dell, inside a National Security Agency outpost in Japan. In March 2013, he joined the consulting firm Booz Allen Hamilton inside the NSA center in Hawaii. In June 2013, he came to international attention after disclosing to several media outlets thousands of classified documents that he acquired while working as an NSA contractor for Dell and Booz Allen Hamilton. Snowden's release of NSA material was called the most significant leak in U.S. history by Pentagon Papers leaker Daniel Ellsberg.
On May 20, 2013, Snowden flew from Hawaii to Hong Kong, where in early June he met with journalists Glenn Greenwald and Laura Poitras, releasing numerous NSA documents to them. On June 9, four days after the first NSA program was exposed by the press, Snowden revealed his identity in a video filmed by Poitras and published by The Guardian. On June 14 the U.S.