From the doc: 'Advanced NT Security Explorer (ANTExp) is an application for Microsoft Windows NT, Windows 2000 and Windows XP system administrators for finding holes in system security. It analyses user password hashes, and tries to recover plain-text passwords. If it's possible to recover the password in a reasonable time, the password should be considered to be insecure. Some users like simple and easy to remember passwords, unfortunately.This program is very actual for NT/2000/XP workstations, where users can access a hard drive from other computer in the network and copy a SAM registry key, where password hashes are stored. Also, users can sniff a network and recover password hash from sniffer results. ANTExp will help you in your way to complete system security.'