Willard's comments about China received little press attention but were stronger than anything said by either company.

"U.S. military and government networks and computer systems continue to be the target of intrusions that appear to have originated from within the PRC (People's Republic of China)," said Willard.

He said that most of the intrusions are focused on acquiring data "but the skills being demonstrated would also apply to network attacks."

Willard testified on the military's operations in its Pacific command, which he said "faces increasingly active and sophisticated threats to our information and computer infrastructure."

"These threats challenge our ability to operate freely in the cyber commons, which in turn challenges our ability to conduct operations during peacetime and in times of crisis," Willard . He said the military was responding in near real-time to threats.