U.S. officials have concluded that the North Korean government ordered the hacking attack on Sony Pictures Entertainment — a breach that led to the studio cancelling the planned release of "The Interview" — and a U.S. official told NBC News that the country "can't let this go unanswered."
The officials told NBC News the hacking attack originated outside North Korea, but they believe the individuals behind it were acting on orders from the North Koreans.
"We have found linkage to the North Korean government," according to a U.S. government source.
An official said the U.S. is discussing what form a response could take, and couldn't detail what options the government has available.
The security breach embarrassed several high-profile Sony executives and led to the studio cancelling the Dec. 25 release of "The Interview," a comedy starring Seth Rogen and James Franco that depicts a fictional assassination attempt on North Korean dictator Kim Jong Un. Amid fallout from the Sony hack, a New Regency film tentatively titled "Pyongyang" and starring Steve Carell "will not be moving forward."