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.

Every time you pick up the phone, dial a number, write an e-mail, make a purchase, travel on the bus carrying a cell phone, swipe a card somewhere, you leave a trace, and the Government has decided that it's good idea to collect it all, everything, even if you've never been suspected of doing a crime.

I'm not an anarchist. I'm not saying, "Burn it to the ground."

When we look at the full-on mass surveillance watching everyone in the country, in the United States, it doesn't work. It didn't stop the attacks in Boston. The marathon bombings. Where again, we knew who these individuals were. It didn't stop the Underwear Bomber, whose father walked into an embassy and warned us about this individual before he walked onto an airplane. And it's not going to stop the next attacks either. Because again, they're not public safety programmes. They're spying programmes. They are valuable for spying.

At the trial of Chelsea Manning, the government could point to no case of specific damage that had been caused by the massive revelation of classified information. The charges are a reaction to the government's embarrassment more than genuine concern about these activities, or they would substantiate what harms were done.

Being confronted with the realization that work you intended to benefit people is being used against them has a radicalizing effect.

When people are talking about cyber weapons, digital weapons, what they really mean is a malicious program that's used for a military purpose. A cyber weapon could be something as simple as an old virus from 1995 that just happens to still be effective if you use it for that purpose.