Redmond (WA) - Microsoft has stepped up its Xbox Live security to ban any console that has been illegally modified from connecting online.
The move comes just as public beta testing of Halo 3 began. According to the Xbox's official Gamerscore blog, this is the main reason for the newly implemented security precaution.
The user's Live account is not actually banned, so it would be possible to move onto another console without losing profile data. A "banned" console can also still access all offline options.