Corporate computers of Sony Pictures Entertainment employees in New York and around the world were infiltrated by a hacker, displaying a weird skeleton, a series of URL addresses, and a threatening message that reads: “Hacked By #GOP Warning: We’ve already warned you, and this is just a beginning. We’ve obtained all your internal data, including your secrets and top secrets” A hacker group that identifies itself as #GOP (Guardians of Peace) claimed responsibility for the defacement across staff computers at Sony Pictures.
Source: https://thehackernews.com/2014/11/Sony-Pictures-Hacked.html