![BackTrack 4 Pre Final](https://www.offsec.com/wp-content/uploads/2009/06/backtrack-wallpaper-1024x640.jpg)
BackTrack Base There have been many changes introduced into BackTrack 4 – most notably, our move to an Ubuntu Intrepid base. We now maintain our own full repositories with modified Ubuntu packages in addition to our own penetration testing tools. Another