Army Gen. Paul Nakasone, who heads both the National Security Agency and the U.S. Cyber Command, usually doesn't say much in public. But recently, he's been on what amounts to a public relations blitz. The message he's pushing is that the U.S. will be more aggressive in confronting and combating rivals in cyberspace.

"I have all the authorities that I need right now to conduct the full spectrum of operations, that's defensive operations all the way to offensive operations. And when I don't have those authorities, I will certainly ask for them," said Nakasone, wearing short sleeves and no tie at the recent RSA Conference, a high-tech gathering in San Francisco.

He's even offering a few select details, a rarity for the super-secretive NSA and Cyber Command.