You might not have realized it, but the next great battle of cryptography began this month. It's ...

Quantum cryptography is back in the news, and the basic idea is still unbelievably cool, in theo...

Most counterterrorism policies fail, not because of tactical problems, but because of a fundamen...

Airport security found a jar of pasta sauce in my luggage last month. It was a 6-ounce jar, abov...

Let me start off by saying that I'm making this whole thing up.

Imagine you're in charge of in...