A security vulnerablity in phpBB (the forum software we use) was
announced on the afternoon of Saturday March 12 and a patch was
released. Within hours of this announcement our forums were defaced.
The level was minimal and no other systems were vulnerable or affected.
No personal information of any user was comprimised. Our system has
been patched and The forums are now back online.
More info about the vulnerabilty that was exploited: