"Some folks are having their Microsoft points stolen or points purchased via their stolen gamer tag," said security researcher Kevin Finisterre in a posting to the Full Disclosure security mailing list on 19 March.

The InFamOuS online gaming clan even lists accounts that it has stolen, accompanied by the reason why, Finisterre found.[...]

There is a related forum thread in Xbox forum  and a recording with Finisterre talking to Microsoft representatives about the issue.

[via PCauthority.com.au ]