In terms of new threats, the U.S. faces the “real possibility” of a surprise cyber attack, he said.
“The next Pearl Harbor we confront could very well be a cyber attack that cripples our power systems, our grid, our security systems, our financial systems, our governmental systems,” Panetta told the panel.
“This is a real possibility in today’s world,” he said. “As a result, I think we have to aggressively be able to counter that. It is going to take both defensive measures as well as aggressive measures to deal with it.”