Expert Sees Business Cyber Networks Under Foreign Attacks

At least half a dozen countries are trying to penetrate U.S. corporate and military computer systems, says an expert cited by the Washington Post.

Shawn Henry was the executive assistant director of the FBI's Criminal, Cyber, Response and Services Branch before retiring last month to join a cybersecurity start-up.

Henry charges that U.S. adversaries are capable not only of stealing sensitive information, but of manipulating and destroying it. He cited one company that that...