The Defense Department is carrying out congressionally mandated reviews of cyber vulnerabilities in its major weapon systems and critical infrastructure through a layered approach involving multiple agencies and teams, according to a joint staff official. Air Force Lt. Gen. Bradford Shwedo, director for command, control, communications and computers/cyber on the joint staff (J6), said he's getting "a little congressional help" in evaluating potential "back doors" in DOD systems. During a Dec. 4 "Air Force IT Day" event hosted by the...