A 29-year-old computer technician for a U.S. defense contractor leaked details of a top-secret American program that collects vast streams of phone and Internet data, American and British newspapers revealed Sunday.

“My sole motive is to inform the public as to that which is done in their name and that which is done against them,” the source, Edward Snowden, told Britain’s the Guardian, one of the papers that broke stories on the program last week.

The Washington Post also disclosed Sunday that Snowden was the source on its stories.

Snowden is a former technical assistant for the CIA and has been working at the National Security Agency, the U.S. electronic intelligence service, for the past four years, the newspaper reported. He said he walked away from a six-figure job in Hawaii for the computer consulting firm Booz Allen Hamilton and has holed up in a hotel in Hong Kong in preparation for the expected fallout from his disclosures.

“I’m willing to sacrifice all of that because I can’t in good conscience allow the U.S. government to destroy privacy, Internet freedom and basic liberties for people around the world with this massive surveillance machine they’re secretly building,” he said.

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