A big security update for phpBB (the forum we use) came out recently. With it came a slew of little hackers, hell-bent on exploiting the holes in older versions. As far as I can tell, we got hacked last night. Also as far as I can tell, we lost nothing, luckily.
I've restored from backup and upgraded the site. We run a fairly customized version of the software, so if you encounter bugs from the upgrade, please let me know. Thanks!