Mitsubishi Heavy Industries says it’s possible some secrets had been stolen by hackers. The defense contractor had denied any information had been pilfered by hackers in August. The attack was the first against a major Japanese defense contractor, the first aimed at U.S. companies. The company declined to confirm that any diversion of data related to defense or nuclear technologies took place. Defense News ranked the company as the world’s 26th-largest defense contractor last year. The firm’s corporate headquarters was also targeted by attackers.”]