A zero-day exploit is a method of hacking a system. It's sort of a vulnerability that has an exploit written for it, sort of a key and a lock that go together to a given software package. It could be an internet web server. It could be Microsoft Office. It could be Adobe Reader or it could be Facebook.

A given order may at any given time fail to represent those values, even work against those values. I think that's the dynamic we're seeing today.

Nobody's going to vote for Isis.

There's a real danger in the way our representative government functions today. It functions properly only when paired with accountability.

If an adversary didn't target our power plants but they did target the core routers, the backbones that tie our internet connections together, entire parts of the United States could be cut off. That would have a tremendous impact on us as a society and it would have a policy backlash.

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

It's critical how we want to use these spy programs, these electronic capabilities, where we want to draw the line, and who should approve these programs, these decisions, and at what level, for engaging in operations that could lead us as a nation into a war.