A twitter user operating under the handle @s3rver_Ex claims to have hacked into and defaced the website and Facebook page of Sony Pictures. A number of reports credit Anonymous with the hack as part of their ongoing OpSony campaign. The attack indicates that Sony is continues to struggle with security and remains vulnerable in some ways, which is a problem considering the company has a constant target on its back. The hack seems quite small, especially in comparison to the devastating slew attacks launched against the various Sony entities last spring.
Source: https://threatpost.com/sony-pictures-website-facebook-page-defaced-010612/76068/