BackTrack is a Linux distribution designed for penetration testing and security assessments. It features tools for tasks like network sniffing, vulnerability scanning, password cracking, and digital forensics. BackTrack 5 provides support for both 32-bit and 64-bit architectures, as well as ARM devices. It includes desktop environments like KDE and Gnome, and packages the latest versions of popular security tools like Metasploit. While expanding device support and including new features, BackTrack 5 is also focused on stability and compliance with security assessment standards.