U.S. fears Sony hackers may never be caught - law enforcement official

By Mark Hosenball and Jim Finkle WASHINGTON/BOSTON (Reuters) - Government investigators fear the hackers behind the unprecedented attack on Sony's Hollywood studio may never be caught if they are under the protection of North Korea, a U.S. official said on Wednesday. The law enforcement official, who declined to be identified because the investigation is ongoing, said authorities will require significant time to definitively confirm their suspicions that North Korea sponsored the attack, wh