In case you missed it the worlds leading penetration testing Linux Distribution BackTrack has hit version 4.0. A new web site, great video tutorials for those wanting to learn and a complete guide to Metasploit are just a few of the new bits for you to check out.
Download Back-Track now and get cracking with some serious Security Testing. Explore the Offensive-Security, Back-Track websites, and the forums for Guides, Tutorials and FAQ's.
Real security can only be achieved through awareness, knowledge and some clever tools.
Historical timeline available here