There are a lot of tools and applications available to security researchers to conduct penetration testing. Many of those tools run on the open-source Linux operating system, though not every distribution is properly configured to be a proper platform for security research. That’s where the Kali Linux distribution comes into play as an optimized Linux distribution built for security researchers. The Kali Linux 1.0.7 distribution was officially released on May 27, providing users with a number of new features. Kali Linux was originally known as Backtrack Linux, before being renamed and rebuilt in March 2013. One of the primary new features in Version 1.0.7 is the introduction of encrypted USB persistence for Live images. With that feature, Kali Linux can be installed onto a USB storage key, with user storage that can be updated and fully encrypted. One of the key benefits of Kali Linux is that it assembles in one place many tools that security researchers need. Tools for information gathering, vulnerability analysis, Web applications, password attacks, stress testing and even hardware hacking are all included. In this slide show, eWEEK takes a look at some of the features of the Kali Linux 1.0.7 release.