Kali Linux is an open-source operating system based on the popular BackTrack Linux suite. The team (Offensive Security) has introduced some new features such as Logical Volume Management (LVM) and Linux Unified Key Setup (LUKS) for full-disk encryption with a “data nuke” password option that would render the drive inaccessible if entered.
If you are currently operating Kali Linux, you can just upgrade the current version by issuing the following commands:
root@kali:~# apt-get update
root@kali:~# apt-get dist-upgrade
you can always download complete ISO at: http://www.kali.org/downloads/.
During installation, Kali Linux allows users to configure a password for the root user. However, should you decide to boot the live image instead, the i386, amd64, VMWare and ARM images are configured with the default root password – “toor“, without the quotes.
For more information on this topic, also checkout:
Developers mull adding data nuke to Kali Linux – By Michael Lee at ZDNet – http://www.zdnet.com/developers-mull-adding-data-nuke-to-kali-linux-7000024862/