There is no shortage of security-focused Linux distributions on the market, and among them is Pentoo Linux. While some security-focused Linux distributions concentrate on privacy, like Tails, others like Kali Linux and Pentoo focus on security research, providing tools that enable research and penetration testing. Pentoo Linux differentiates itself from other security Linux distributions in a number of ways. The primary difference is the fact that Pentoo is based on Gentoo Linux, which is a source-based Linux distribution that uses the Portage package-management system. Gentoo has capabilities known as “Hardened Gentoo,” which Pentoo also inherits, providing users with additional security configuration and control for the Linux distribution itself. Pentoo 2015 RC 3.7 was released Jan. 5, providing updated tools and features. Among the new features is the integrated ability to verify that the distribution files have not been corrupted. Pentoo provides many applications for security analysis, including wireless, database, exploit, cracking and forensic tools. In this slide show, eWEEK looks at key features and tools in the Pentoo 2015 RC3.7 release.