Anonymous group hijacked more than 200 Facebook groups and renamed them Control Your Info Pasted on each group s Wall was a message announcing that it had been hijacked and reminding members to be careful about controlling personal information on social networking sites. This means we control a certain part of the information about you on. If we wanted we could make you appear in a bad way.could damage your image, the message said. Facebook has paid over $4 million to victims to reimburse them for the unauthorized ads purchased using their ad accounts.
Source: https://threatpost.com/facebook-administrator-groups-hijacked-111009/73071/