His strong words came hours after the FBI said North Korea was responsible for the attack on Sony.
The announcement follows a two-week investigation by law enforcement into the cyberattack.
Snippets of information about the secretive regime's cyberops have leaked out over the years
There's a lot of circumstantial evidence, but very little actual information on the hack against Sony.
Latest lawsuit seeks class action status and alleges company didn't do enough to protect employee data
Two former employees want compensation for the data leak, the suit says.
The latest message from hackers was accompanied with a fresh data dump
Clay County Hospital faced a demand for money to keep patient data from being revealed
The latest message is accompanied by more leaked emails
Weeks after hack, Sony continues to see corporate data leaked on the Internet
Lawsuit follows September warning and is latest legal hurdle for the company.
Concentrating on high-end products is returning profits, the company says
The hackers have released more confidential data and reissued threats against the company
A posting on an Internet forum links the Sony Pictures hack to North Korea, as a group demands Sony pull a movie that makes light of an assassination of Kim Jong Un.
State media breaks silence on the Sony hack