(An update on the recent cyber attack on Sony Pictures)
The U.S. National Security Agency has echoed the FBI's conclusion that North Korea was behind the attack.
NSA Director Michael Rogers told The Daily Beast that the agency had partnered up with the FBI to help the U.S. government link Pyongyang to the cyber attack.
Rogers said the NSA provided data and technical analysis as part of a broad inter-agency effort to help the government understand the incident.
The FBI says it's "very confident" Pyongyang was behind the attack, adding that it had traced it to IP addresses only used by North Korean hackers.