I've made this post as a reminder, to link to it from forum.
Probably, if you were linked here, you had troubles when someone gained root at your system.
The problem I'm writing this post about is kernel/software cracking.
Many people had troubles with crackers who gained root at their servers or desktops. Some of users had all permissions and privileges set up correctly but still got kernel BOF'ed and rooted.
For instance, let us take most exploitable vulnerability,...