If I recall correctly, your old forum used some random forum software that was no longer maintained. IP.Board is top-of-the-line forum software which shouldn't be prone to such attacks.
Huzzah, more mods! The other ones we just hired were already so gung-ho, there were never any reports to deal with.
Well, our forum died because of repeated attacks. Now with more, if that ever occurs, you'll be more prepared to deal with it.
Yes, the old forums used Beast, which I believe is no longer in development.