Anti-Valve site No-Steam claims to have hacked Valve, gaining access to internal web pages, customer credit card information, Valve financial and error logs and the company's Cafe directory.

No-Steam's owner MaddoxX claims to have also posted code which he allows will let people create their own cafe certificates. MaddoxX also posted what he claims are a series of files "to valve cafe, including a few CC numbers and some info's."

It's unclear whether this is an attention getting hoax or legitimate threat, but we've contacted Valve for comment.