The company stated it is trying to determine if any personal information has been taken, but mentioned that credit card information is not at risk. The European service remains unaffected. The full statement reads:
We have reason to believe that unknown parties may have gained unauthorised access to a particular Square Enix server related to the free Square Enix Members service offered in North America and Japan. In response, Square Enix, Inc. has temporarily suspended operation of the Square Enix Members service starting at 10PM (PST) on December 12, 2011.
We are assessing the full extent of this potential breach to determine what data, if any, was compromised and will provide more details as soon as possible. While some personal information may have been accessed, we can confirm that there is no possibility of any credit card information leak from this incident, since the server in question stores no credit card information.
We estimate that the suspension will continue for a few days until we complete our investigation and counter-measures. We will update you as we learn more.
We sincerely apologize for any inconvenience caused by the temporary suspension of the Square Enix Members service. We take data security extremely seriously and we regret any inconvenience this may have caused our customers and fans. We appreciate your patience and support at this time.
EGM’s TAKE: Yet another hack, although it’s still unknown at this moment just what information has been taken, but to reiterate Square Enix asserts credit card information is not at risk.