Sony CEO does not expect studio upheaval after cyber attack

LAS VEGAS (Reuters) - Sony Corp Chief Executive Kazuo Hirai does not see the November cyber attack on Sony Pictures Entertainment causing major upheaval in the studio's business. Hirai on Tuesday told a roundtable of reporters at the Consumer Electronics Show in Las Vegas that he had signed off on all major decisions by the company in response to the attack, which the U.S. government has blamed on North Korea. Sony's network was crippled by hackers as the company prepared to release &q