Considering Apple makes a big deal about the security of their products as well as that they are so simple to use they don't need to be accompanied by manuals, it might seem a little ironic that they have issued this 240-page manual entitled "Mac OS X Security Configuration for Version 10.5 Leopard". (Even the title is cumbersome!)

I brief glancing over of the guide reveals that the guide is not targeted at Joe Everybody but more specifically at that IT person who says "No Macs! There's no way to make them secure on our network!"
If you're using this guide, you should be an experienced Mac OS X user, be familiar with the Mac OS X user interface, and have some experience using the Terminal application's command-line interface. You should also be familiar with basic networking concepts.

Some instructions in this guide are complex, and deviation could cause serious adverse effects on the computer and its security. These instructions should only be used by experienced Mac OS X users, and should be followed by thorough testing.
Here you go, Mr. IT Snob, take this Mac and secure it!