Call of Duty 4 Beta hackers locked out - Xbox 360

Over the last couple of days, an exploit has been circulating which has allowed multiple users to get onto the one Call of Duty 4 Beta invite. While there were only 100k beta tokens on offer, some 23k extra users managed to get onto the beta using this work-around over the last day or two.

In response, Microsoft has responded by giving a 24 hour ban to those 23,000 users than were using the hack.