How secure is your password ? (might also be a good time to change both your prune and email passwords)
Only they or the sysadmins will know whether hacking the forum is possible
To quote Donald Rumsfeld....
There are known knowns; there are things we know we know.
We also know there are known unknowns; that is to say we know there are some things we do not know.
But there are also unknown unknowns – there are things we do not know we don't know.
i.e. the moderators/sysadmins will only know about the exploits they know about based on the software used, or based on what they are looking for (or penetration testing for). Stuff they're not looking for, or don't know about (e.g. zero day attacks) will simply fly under the radar.