The Command Line - "The blog of a self proclaimed hacker, curmudgeon and hacktivist"
Skepticality - Devoted to skepticism and debunking.
Bruce Schneier - My sometime sparring partner and an all-around security thinker.
James ("The Amazing") Randi - Skeptic extraordinaire and debunker of woo-woo and psychic hoodoo. People who think that I have low tolerance for fools should check out Randi.
Past Sponsors
Tenable Network Security - the company that produces Nessus and other security management tools.