... that, we d need to be able to drop a new file into /etc, which we can’t do unless someone has really screwed up the file system permissions.On most UNIX systems, if we can write to /etc, we can ... muchcontrol over it we have, as well as how much information we have about it. Theblack box is the hardest to attack, and we make every effort to break it open. Leftwith no choice, we try to make ... ofways. This is just another reason why regular users shouldn’t be able to writeto /etc. Of course, if we re going to hide a Trojan horse somewhere (after we vealready broken root), this might...