The public don't want to authorize the internet to become a battleground. We need to do everything we can as a society to keep that a neutral zone, to keep that an economic zone that can reflect our values, both politically, socially, and economically.

I believe that when [senator Ron] Wyden and [senator Mark] Udall asked about the scale of this, they [the NSA] said it did not have the tools to provide an answer. We do have the tools and I have maps showing where people have been scrutinised most. We collect more digital communications from America than we do from the Russians.

You don't need to justify your rights as a citizen - that inverts the model of responsibility. The government must justify its intrusion into your rights. If you stop defending your rights by saying, "I don't need them in this context" or "I can't understand this," they are no longer rights.

It's much easier, I think, to protect communications while they're in transit at least, than it is to enforce legislation in every country in the world to say that you can't do this.

In America, we collect more digital communications from America than we do from the Russians.

Encryption works. Properly implemented strong crypto systems are one of the few things that you can rely on. Unfortunately, endpoint security is so terrifically weak that NSA can frequently find ways around it.

You shouldn't send an email from a computer that's associated with you if you don't want it to be tracked back to you. You don't want to hack the power plant from your house if you don't want them to follow the trail back and see your IP address.