The official line on perhaps the biggest security story of the year shifted noticeably this week following a report by the security firm Norse Corp. that cast doubt on the official explanation of the devastating November hack: that it was a state-sponsored operation carried out by hackers working for the government of the Democratic Peoples Republic of Korea, or DPRK. Two reports in recent days – both citing officials close to the Sony hack investigation – suggest that the FBI believes – simultaneously – that the DPRK did not act alone and that it was the only actor responsible for the attack on Sony Pictures Entertainment.
