I'm not a spy for Russia or China or any other country for that matter.

A different [Ronald] Reagan-era authority: EO 12333, an executive order for foreign-intelligence collection, as opposed to the ones we now use domestically. So this one isn't even authorized by law. It's just an old-ass piece of paper with Reagan's signature on it, which has been updated a couple times since then. So what happened was that all of a sudden these massive, behemoth companies realized their data centers - sending hundreds of millions of people's communications back and forth every day - were completely unprotected, electronically naked.

I have no intention of hiding who I am because I know I have done nothing wrong.

Someone responding to the story said 'real spies do not speak like that'. Well, I am a spy and that is how they talk. Whenever we had a debate in the office on how to handle crimes, they do not defend due process - they defend decisive action. They say it is better to kick someone out of a plane than let these people have a day in court. It is an authoritarian mindset in general.

Someone recently talked about mass surveillance and the NSA revelations as being the atomic moment for computer scientists. The atomic bomb was the moral moment for physicists. Mass surveillance is the same moment for computer scientists, when they realize that the things they produce can be used to harm a tremendous number of people.

The only thing I fear is the harmful effects on my family, who I won't be able to help any more. That's what keeps me up at night.

When the US government got word that I was planning to leave Russia to go to Latin America, they brought down the plane of the - the presidential plane, which had diplomatic protection, that had the Bolivian president on board. They closed the airspace in four different countries in Europe, I believe, which was extraordinary, unprecedented.