Primary websites Valvesoftware.com and steampowered.com were off line for more than an hour, with the Steam client also affected. While the websites – and consumer forums – were quickly restored, community and multiplayer features of the client took a little longer.
According to Valve employee Alan Farnsworth, the drama started at the company’s data centre.
Our data center’s uninterruptible power supplies experienced a power failure. The power is back on now and we’re working to get service restored as quickly as possible. We apologize for any inconvenience this may have caused.
Company CEO Gabe Newell made the announcement via an open letter to the community:
Dear Steam Users and Steam Forum Users
We continue our investigation of last year’s intrusion with the help of outside security experts. In my last note about this, I described how intruders had accessed our Steam database but we found no evidence that the intruders took information from that database. That is still the case.
Recently we learned that it is probable that the intruders obtained a copy of a backup file with information about Steam transactions between 2004 and 2008. This backup file contained user names, email addresses, encrypted billing addresses and encrypted credit card information. It did not include Steam passwords.
We do not have any evidence that the encrypted credit card numbers or billing addresses have been compromised. However as I said in November it’s a good idea to watch your credit card activity and statements. And of course keeping Steam Guard on is a good idea as well.
We are still investigating and working with law enforcement authorities. Some state laws require a more formal notice of this incident so some of you will get that notice, but we wanted to update everyone with this new information now.
Despite conspiracy theories, today’s outage has nothing to do with the alleged information theft.