Kali Linux rolling distribution(2017.1) is a Debian based Linux distribution aimed at advanced penetration testing and security auditing including forensic and reverse engineering. Kali contains several hundred tools which are geared towards for various information security tasks such as penetration testing ,security research ,computer forensic and reverse engineering.Security of networks is very important .offensive security is best for defense. The latest release comes with updated packages and updated kernel that provide better hardware support .You can find complete documentation and the user guide at http://docs.kali.org The Kali Linux rolling distributionreleased. Kali switched to a rolling release model back when they hit version 2.0 (codename "sana”), however the rolling release was only available via an upgrade from 2.0 to kali-rolling for a select brave group. After 5 months of testing theirrolling distribution (and its supporting infrastructure), they were confident in its reliability - givingusers the best of all worlds - the stability of Debian, together with the latest versions of the many outstanding penetration testing tools created and shared by the information security community.The automated notification system of updated penetration testing tool releases has been working well over the past 5 months and has ensured that the kali-rolling repository always holds the latest stable releases of monitored tools. This usually leaves a gap of around 24-48 hours from notification of a new tool update, to its packaging, testing, and pushing into thier repositories. Theywould also like to introduce our new Kali Linux Package Tracker which allows you to follow the evolution of Kali Linux both with email updates and a comprehensive web interface.Kali Linux rolling distribution(2016.1) is a Debian based Linux distribution aimed at advanced penetration testing and security auditing including forensic and reverse engineering.Kali contains several hundred tools for various information security tasks including forensic and reverse engineering .Security of networks is very important .offensive security is best for defense . The BackTrack is re-born as Kali Linux is a GPL-compliant Linux distribution built by penetration testers for penetration testers with development staff consisting of individuals spanning different languages, regions, industries, and nationalities. The evolution of Kali took place over many years of development, penetration tests, and unprecedented help from the security community. Kali Linux originally started with earlier versions of live Linux distributions called BackTrack, Whoppix, IWHAX, and Auditor.When it was initially developed, Kali was designed to be an all-in-one live CD to be used on security audits and was specifically crafted to not leave any remnants of itself on the system. With millions of downloads, it has become the most widely adopted penetration testing framework in existence and is used by the security community all over the world including Governments defence establishments.Kali Linux is an open source project that is maintained and funded by Offensive Security, a provider of world-class information security training and penetration testing services.In addition to Kali Linux, Offensive Security also maintains the Exploit Database and the free online course, Metasploit Unleashed.