We have to be able to reject disproportionate and unjustified responses in the cyber domain just as we do in the physical domain.

If you ask anybody at Cyber Command or look at any of the job listings for openings for their positions, you'll see that the one thing they don't prioritize is computer network defense. It's all about computer network attack and computer network exploitation at Cyber Command.

Properly implemented strong crypto systems are one of the few things that you can rely on.

We have to confront the reality of our world, and make the hard decisions about which way we want to move forward.

The new iPhone has encryption that protects the contents of the phone. This means if someone steals your phone - if a hacker or something images your phone - they can't read what's on the phone itself, they can't look at your pictures, they can't see the text messages you send, and so forth. But it does not stop law enforcement from tracking your movements via geolocation on the phone if they think you are involved in a kidnapping case, for example.

Nobody's going to vote for terrorism. So our governments don't have that sort of political pressure to act in a responsible manner when it comes to stewardship of our rights.

I talk to cryptographers, some of the leading technologists in the world, all the time about how we can deal with these issues. It is not possible to create a back door that is only accessible, for example, to the FBI.