Whether you’re hacking wireless, exploiting servers, performing a web application assessment, learning, or social-engineering a client, BackTrack is the one-stop-shop for all of your security needs. – back|track-linux
Back|Track is a Linux-based security testing suite that aids IT professionals to assess an existing operating system using a pure native environment dedicated to hacking. It can be used as a primary operating system, or just as a penetration tester. Back|Track has a quick and easy way to update its security tools so you’re sure you are using the most up-to-date software dedicated to testing your computer security.