The attack hit a server for developer BioWare, which is owned by EA.
Hackers got in through a backdoor using the 10-year old "Neverwinter Nights" user forums.
Although the compromised data is from BioWare, EA warns that your personal data with EA Games may have been stolen, as well.
EA did make it very clear that no financial data was compromised, but encrypted passwords, names, CD keys, addresses and phone numbers were all stolen. If you have a BioWare or EA Games account, it is prudent to go and change your password as soon as possible.
BioWare apologized (via Rant):
We take the security of your information very seriously and regret any inconvenience this may have caused you. If your username, email address and/or password on your EA account are similar to those you use on other sites, we recommend changing the password at those sites as well. We advise all of our fans to always be aware of any suspicious emails or account activity and report any suspicious emails and account activity to Customer Support at 1-877-357-6007.
Written by: Andre Yoskowitz @ 24 Jun 2011 23:23