Kali Linux 2021.3a | File Size : 3.1 GB /3.8 GB Kali contains a vast array of hacker tools and utilities (password attacks, sniffing and spoofing, reverse engineering, ...). Hacking foreign WiFi/WLAN (wireless attacks) and more. Kali is designed for digital forensics and penetration testing.Kali is preinstalled with numerous penetration-testing programs, including nmap (a port scanner), Wireshark (a packet analyzer), John the Ripper (a password cracker), and Aircrack-ng (a software suite for penetration-testing wireless LANs). Kali can be run from a hard disk, live DVD, or live USB.