BlackArch Linux is an Arch Linux-based penetration testing distribution for penetration testers and security researchers. The repository contains 2872 tools. BlackArch Linux is compatible with existing Arch installs. BlackArch Linux can be installed as a single distro using their ISOs and it is also compatible with existing/normal Arch installations. In this case it will act as an unofficial user repository. In this post we will cover the process of adding BlackArch repositories to