A book called "Stealing the Network: How to Own the Box" published by Syngress Press is filled with about a dozed fictional accounts of network intrusion, and some taken from the black hat, some from the white hat sides. The stories are written by security professionals, sysadmins, and hackers, and although fictional, there are some sailent discussion points you can draw from them. It may help guide your topic.

Besides, it's a fun read.

l00p