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(NEWSER) – Despite the FBI's firm assertion earlier this month that North Korea was definitely behind the Sony hack attack, not everyone has been satisfied with that conclusion. A Chatham House cybersecurity expert, conservative blogger Charles C. Johnson, a hacking conference security director, and plenty of theorists on Twitter and Reddit have all advanced postulations that don't point to North Korea.

But only cybersecurity firm Norse was able to talk the FBI into a meeting yesterday, where company researchers proposed the hack was pulled off by an angry employee, perhaps working with piracy hackers, Politico reports. The company's evidence, compiled partly using leaked Sony HR docs, points to six people (two in the US, one in Canada, one in Singapore, one in Thailand), including an employee who worked in a technical capacity and knew her way around Sony's networks, the Security Ledger reports.

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