LinuxSecurity.com: "There are a number of security scanners out there. Most of them are vendor specific, and each boasts a number of
vulnerability checks to determine what is secure on your system and what is not. So what if you are a hardcore open source
paranoid like myself who wouldn't think to spend a dime on the latest commercial security scanner from CyberSlueths or
CrackerCops? Well there is a superior alternative that is regularly updated, free, and open source. It's called Nessus, and it is
by far the best scanner available."
May 7, 2001