1. BackTrack 5r3: This is one of the most loved and best known Linux-based hacking distributions. Based on Canonical’s Ubuntu operating system, Backtrack’s logo says, “The quieter you become, the more you are able to hear.” With version 5, the GNOME desktop environment was added along with the usual KDE desktop environment.2. Nodezero: This is another Ubuntu-based hacking, which is used for penetration testing. Every time you get a patch for bugs in the Ubuntu OS, Nodezero also gets updated. 3. BackBox Linux: This...