Custom developed digital weapons, cyber weapons nowadays typically chain together a number of zero-day exploits that are targeted against the specific site, the specific target that they want to hit. But it depends, this level of sophistication, on the budget and the quality of the actor who's instigating the attack. If it's a country that's less poor or less sophisticated, it'll be a less sophisticated attack.

[Bill] Binney will argue with you all day about ThinThread, but his idea was that it would collect everything about everybody but be immediately encrypted so no one could read it. Only a court could give intelligence officials the key to decrypt it. The idea was to find a kind of a compromise between [privacy rights and] the assertion that if you don't collect things as they happen, you won't have them later - because what the NSA really wants is the capability of retrospective investigation.

When you say, ‘I have nothing to hide,’ you’re saying, ‘I don’t care about this right.’ You’re saying, ‘I don’t have this right, because I’ve got to the point where I have to justify it.’ The way rights work is, the government has to justify its intrusion into your rights.

I think it's reasonable that the government, when it has a warrant from a court, when it's exposed to scrutiny by a legal process that would be upheld, not just nationally, but internationally as a reliable and robust standard rights protection, they can enjoy certain powers. This is no different from having the police able to get a warrant to go and search your house, to kick at your door because they think you're an arms dealer or something like that. There needs to be a process involved, it needs to be public, and it needs to be challengeable in court at all times.

The only reason I do these interviews - I hate talking about myself, I hate doing this stuff - is because incredibly well-meaning people, whom I respect and trust, tell me that this will help bring about positive changes. It's not going to cause a sea change, but it will benefit the public.

I'm still working for the government.

[Barton ] Gellman printed a great anecdote: he showed two Google engineers a slide that showed how the NSA was doing this, and the engineers "exploded in profanity."