This is part of the Leo Laporte TWIT.tv podcasts that cover tech from various angles. Leo co-hosts Security Now! with Steve Gibson:
Steve Gibson, the man who coined the term spyware and created the first anti-spyware program, creator of Spinrite and ShieldsUP, discusses the hot topics in security today with Leo Laporte. Published every Thursday.
The most recent podcast was a Q&A from listeners and included such topics as IronKey (a hardware-encrypted USB flash drive), TrueCrypt (free open-source disk encryption software for Windows Vista/XP, Mac OS X, and Linux), and the news story that the FBI had confiscated 400 counterfeit Cisco routers exported from China.
This is the type of podcast, as one of the listeners noted, that you don't listen to in the background. They go into enough technical detail you would probably want to listen multiples times, but to make it easier to absorb the content Gibson puts up the transcript, a smaller MP3 file and other supporting material for each episode. So far, they're up to 136.