House lawmakers are pushing the Defense Department to shore up its policies on contractor cybersecurity, as Congress weighs legislative options in the wake of a hack into a Navy contractor's sensitive undersea warfare data. The House Armed Services Committee received a members-only, classified briefing on the hack June 20, a day before questioning several DOD officials in an open hearing on the Pentagon's policies surrounding threats to its technology transfer. Lawmakers confirmed the hack, which The Washington Post reported was...