Skip to Content

Cyber security firm blames insiders for Sony hack

December 30, 2014

Sony Corp. Chief Executive Officer Kazuo Hirai News ConferenceSony Corp. Chief Executive Officer Kazuo Hirai News Conference
Kazuo Hirai, president and chief executive officer of Sony. A cyber security firm believes a group of six individuals orchestrated the hack, including at least one former employee.Photograph by Noriyuki Aida — Bloomberg/Getty Images

This post is in partnership with Time. The article below was originally published at Time.com.

By Noah Rayman, TIME

A leading cyber security firm says it has evidence that contradicts the government’s allegation that North Korea was behind the debilitating cyber attacks against Sony Pictures.

Researchers from the firm Norse told Security Ledger, an independent security news website, that they believe that a group of six individuals orchestrated the hack, including at least one former employee who was laid off in company-wide restructuring in May.

The latest allegations add to growing skepticism over the FBI’s assertion — reiterated by President Barack Obama — that linked North Korea to the attack, which the country has denied. A recent linguistic analysis cited in the New York Times found that the hackers’ language in threats against Sony was written by a native Russian speaker and not a native Korean speaker.

“For every clue that seems to point to the involvement of the DPRK, there are others that point in other directions, as well,” the Security Ledger reports.