Arma 3 developer Bohemia Interactive has been hacked.
The Czech studio discovered its websites had been accessed and a database containing usernames, email addresses and encrypted passwords had been downloaded.
It insisted that because of the encryption of the passwords "it is very unlikely that anything nefarious can be done with this information", and no other information, including credit card details, is stored by the developer.
However, it is resetting the passwords of all users, so if you want to log in you'll need to change yours over at Bohemia's recover password part of its website.
Bohemia is currently hard at work on ongoing development of military sim Arma 3 and DayZ Standalone.