A cyber security firm says North Korea was not responsible for the hack attack on Sony.
Norse says the information they've collected shows that North Korea had nothing to do with the hack.
Instead, they say it was a disgruntled former Sony employee.
Company executives say they met with the FBI yesterday to present their findings.
But the FBI is not backing down on its claim that North Korea was responsible.
WPVI
The logo of Sony is displayed outside the Sony building at Ginza shopping district in Tokyo, Thursday, Dec. 18, 2014. (AP Photo/Eugene Hoshiko)