1) Toribash is not hack proof. No game is.
2) Nothing is perfect, you cannot expect a server to be up 24/7 and work every single time you get on.
3) Don't point fingers at people unless you have solid proof (PICTURES) that the person did it.
4) If you've got a problem (aka, you thinking someone is hacking) PM an admin for god's sake, don't whine about it in Support. 99% of the time it won't be noticed.
And 5, for good measure) If someone really is spam-joining a server...well, then there's your problem.