To be fair, I'm a big fan of Sophos' products - I don't work for Sophos, but I do recommend their stuff to my clients. In particular, their corporate products for AV and spam. The podcasts are an excellent mix of general educational details - defining malware threats, things to look out for, etc. Each episode is clear and concise, and refreshingly free of marketspeak (in otherwords, they're not pushing their products - they rarely even mention them) If you want to learn more about spam, viruses, phishing, and why this stuff exists - check it out! The lastest episode (as of my review) is episode 11 - a nice overview of what happened in 2006 (Security Threat Overview). It's an excellent starting point for new listeners to get an idea of what the podcast is about.