The European PlanetSide 2 website has word that the EU servers for the MMOFPS have suffered a breach, explaining what this means to users (thanks Rock, Paper, Shotgun). Here's word:

We have detected that there recently has been unauthorized third-party access to one of our systems. The possibility that your data (Email address and password) has been accessed by an unauthorized third party cannot be excluded. We were able to detect the problem promptly and took all necessary actions to rectify the issue.

Your account data is encrypted with us for your security. Nevertheless, we have decided to take preventative measures in order to ensure the highest degree of security.

All accounts that may have been subject to unauthorized access have received an e-mail in which we have requested the user to change their password.

If you are not able to log into your game, this means that your account has been suspended for security reasons. You can reactivate your account by following the link below and creating a new password.

http://www.planetside2.eu/en/forgot_password