Steam has announced that its servers were hacked into last week.
President Gabe Newell said that the PC and Mac service's forums were "defaced" on November 6, which had led to them being offline.
Of more concern is the fact that the intruders were able to access a database featuring usernames, encrypted password data, game purchases, email addresses, billing addresses and encrypted credit card information.
The company claims that there is no evidence that credit or personal information was taken, or that any informagtion was cracked.
So far, no credit card misuse has been reported.
Steam has taken the security measure of requiring forum users to change their password on their next login, and that users who share their passwords with other accounts should remedy to change them as soon as possible.
However, they insist that regular Steam account passwords were separate and therefore not affected.
Steam's hack is just one in a long line of breaches to have occured to games publishers, with Sega, Codemasters, Bethesda and Nintendo suffering intrusions this year, as well as a very high profile breach of the PlayStation Network earlier this year.
High profile games such as Modern Warfare 3 and Football Manager 2012 can be purchased through Steam, with the latter requiring users to sign up to it in order to play the game.
Newell's statement in full:
Dear Steam Users and Steam Forum Users,
Our Steam forums were defaced on the evening of Sunday, November 6. We began investigating and found that the intrusion goes beyond the Steam forums.
We learned that intruders obtained access to a Steam database in addition to the forums. This database contained information including user names, hashed and salted passwords, game purchases, email addresses, billing addresses and encrypted credit card information. We do not have evidence that encrypted credit card numbers or personally identifying information were taken by the intruders, or that the protection on credit card numbers or passwords was cracked. We are still investigating.
We don't have evidence of credit card misuse at this time. Nonetheless you should watch your credit card activity and statements closely.
While we only know of a few forum accounts that have been compromised, all forum users will be required to change their passwords the next time they login. If you have used your Steam forum password on other accounts you should change those passwords as well.
We do not know of any compromised Steam accounts, so we are not planning to force a change of Steam account passwords (which are separate from forum passwords). However, it wouldn't be a bad idea to change that as well, especially if it is the same as your Steam forum account password.
We will reopen the forums as soon as we can.
I am truly sorry this happened, and I apologise for the inconvenience.
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