The FBI is reported to be investigating the people responsible for the denial of service attacks that rendered Microsoft's Xbox Live and Sony's PlayStation Network inaccessible for much of Christmas Day, according to sources speaking to the Daily Dot.
A group calling itself Lizard Squad has claimed responsibility for the Christmas attacks. The group has raised its profile over the Christmas period by speaking with a variety of media outlets, including BBC Radio 5 Live and Sky News. Talking to WinBeta, group members said that the denial of service attacks were being done to demonstrate poor security on the part of Microsoft and Sony.
The Lizard Squad members call themselves "Ryan Cleary" (after Ryan "ViraL" Cleary, the LulzSec collaborator imprisoned for hacking and possession of child pornography) and "Vinnie Omari." They claim that their denial of service attacks used undersea routers and that a total of 1.2 terabits per second of data flooded the gaming networks.