Though the FBI has blamed North Korea for the devastating cyber attack on Sony Pictures Entertainment, experts from the security firm Norse believe that the hack may have been an inside job according to The Security Ledger.
The paper says Norse claims to have evidence that shows the Sony hack was perpetrated by six individuals, including two based in the U.S., one in Canada, one in Singapore and one in Thailand. They add that among the six was one former Sony Pictures employee, a ten-year veteran of the company with a very technical background who was laid off in May following restructuring.
Norse used human resources documents that were leaked as part of the hack on Sony to first identify and then track the former Sony employee’s online activity at least since May, when they left the company. They apparently found communications with other individuals affiliated with underground hacking and hacktivist groups in Europe and Asia.
Norse’s findings are not conclusive though, but the company briefed the FBI about its findings on Monday.