We can still publicly post a message to Facebook that's globally readable. But we could also adjust things so that they can only be shared with those closest to us, and the confident that this is enforced through both legal and a systemic standards-based protection.

The way the United States intelligence community operates is it doesn't limit itself to the protection of the homeland. It doesn't limit itself to countering terrorist threats, countering nuclear proliferation. It's also used for economic espionage, for political spying to gain some knowledge of what other countries are doing.

We decentralise the ability to decide the level of publicity that's attached to any of our communications.

These activities can be misconstrued, misinterpreted, and used to harm you as an individual even without the government having any intent to do you wrong.

Even if it were, you run into the same problem with international commerce: if you create a device that is famous for compromised security and it has an American back door, nobody is gonna buy it.

I wasn't trying to change the laws or slow down the machine. Maybe I should have. My critics say that I was not revolutionary enough. But they forget that I am a product of the system. I worked those desks, I know those people and I still have some faith in them, that the services can be reformed.

For me, in terms of personal satisfaction, the mission's already accomplished. I already won. As soon as the journalists were able to work, everything that I had been trying to do was validated. Because, remember, I didn't want to change society. I wanted to give society a chance to determine if it should change itself.