Cyber-attacks aimed at the U.S. military come on two fronts, said Tim McKnight of Northrop Grumman. A number of countries are actively working to develop methods for disabling the computer systems the U.S. military relies on during wartime. And adversaries are breaking into military and corporate computer systems to steal information about U.S. weapons. Among many cyber assailants who break into U.S. defense and industry computers, China and Russia have the greatest offensive cyber capabilities. Iran is less skilled, but also a threat.

Making Cybersecurity More Attractive (by William Matthews, Defense News)