Sony employees receive email threat claiming to be from hackers

By Lisa Richwine and Jim Finkle LOS ANGELES (Reuters) - Employees at Sony Pictures Entertainment received threatening emails on Friday that claimed to be from the group that carried out a massive cyber attack at the Hollywood film studio. The email said it came from GOP, the shorthand for "Guardians of Peace," the group that claimed responsibility for the hacking of Sony that began Nov. 24, a Sony spokesman said. The attack crippled the studio's computer network and exposed sensit