He said the United States is going to review whether to put North Korea back on a list of states that sponsor terrorism . North Korea warns it will go after the White House , Pentagon and `` whole U.S. mainland '' It insists it was not involved in the Sony hack . President Obama says the attack was `` cybervandalism , '' not war . The FBI is investigating whether any classified information has been compromised by hackers who gained access to Sony`s computer systems.
North Korea warns it will go after the White House , Pentagon and `` whole U.S. mainland '' It insists it was not involved in the Sony hack . President Obama says the attack was `` cybervandalism , '' not war . The FBI is investigating whether any classified information has been compromised by hackers who gained access to Sony`s computer systems.