U.S. warns it will go after Sony , the White House and `` whole North Korea mainland '' `` The DPRK has already launched the toughest counteraction . It insists it was not involved in the Sony hack . President Barack Obama says the attack was `` cybervandalism , '' not war . But he says the U.S. will review whether to put North Korea back on list of terrorism sponsors .
U.S. warns it will go after Sony , the White House and `` whole North Korea mainland '' It insists it was not involved in the Sony hack . President Barack Obama says the attack was `` cybervandalism , '' not war . But he says the U.S. will review whether to put North Korea back on list of terrorism sponsors .