When you're attacking a router on the internet, and you're doing it remotely, it's like trying to shoot the moon with a rifle. Everything has to happen exactly right. Every single variable has to be controlled and precisely accounted for. And that's not possible to do when you have limited knowledge of the target you're attacking.

I hate these questions - I don't like talking about this stuff [popular culture], because it's so... to me, it's so ordinary.

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

And that's not something I'm willing to support, it's not something I'm willing to build and it's not something I'm willing to live under.

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.

I describe myself as an indoor cat, because I'm a computer guy and I always have been.

It doesn't need to be consistently concentrated in these venture-capital funds and things like that.