"FBI agents investigating the Sony Pictures hack were briefed Monday by a security firm that says its research points to laid-off Sony staff, not North Korea, as the perpetrator — another example of the continuing whodunit blame game around the devastating attack.

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Researchers from the cyber intelligence company Norse have said their own investigation into the data on the Sony attack doesn’t point to North Korea at all and instead indicates some combination of a disgruntled employee and hackers for piracy groups is at fault.

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'When the FBI made the announcement so soon after the initial hack was unveiled, everyone in the [cyber] intelligence community kind of raised their eyebrows at it, because it’s really hard to pin this on anyone within days of the attack,' Kurt Stammberger said in an interview as his company briefed FBI investigators Monday afternoon."

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