Every time somebody on the internet sort of glances at us sideways, we launch an attack at them. That's not going to work out for us long term, and the U.S. have to get ahead of the problem if we're going to succeed.

I know the media likes to personalize political debates, and I know the government will demonize me.

Much of what I saw in Geneva really disillusioned me about how my government functions and what its impact is in the world. I realised that I was part of something that was doing far more harm than good.

These [NSA] programs were never about terrorism: they're about economic spying, social control, and diplomatic manipulation. They're about power.

We reject techniques like torture regardless of whether they're effective or ineffective because they are barbaric and harmful on a broad scale. It's the same thing with cyber warfare. We should never be attacking hospitals. We should never be taking down power plants unless that is absolutely necessary to ensure our continued existence as a free people.

To do that they, the NSA specifically, targets the communications of everyone. It ingests them by default. It collects them in its system and it filters them and it analyses them and it measures them and it stores them for periods of time simply because that's the easiest, most efficient, and most valuable way to achieve these ends. So while they may be intending to target someone associated with a foreign government or someone they suspect of terrorism, they're collecting you're communications to do so.

The community of technical experts who really manage the internet, who built the internet and maintain it, are becoming increasingly concerned about the activities of agencies like the NSA or Cyber Command, because what we see is that defense is becoming less of a priority than offense.