Hosts: Steve Gibson with Leo Laporte How do spambots work, why do spammers need them, and the best way to block them and prevent spam. For 16kpbs versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6. Security Now is brought to you by Astaro Internet Security. Bandwidth for Security Now! is provided by AOL Radio.