The Pentagon has an ongoing damage assessment into the hack of a Navy contractor's networks that reportedly saw China steal troves of data on a sensitive program to outfit submarines with a supersonic, anti-ship missile. The cyberattack involved "technical information" residing on the contractor's unclassified networks, according to Kristen Baldwin, acting deputy assistant secretary of defense for systems engineering. She declined to identify the contractor, but confirmed the company followed Defense Department regulations for reporting cyber incidents that occur on...