A couple of my journalist friends have relatively new security-focused podcasts which are now regulars in my commute listening rotation:
Fellow NAISG board member Bill Brenner is a Senior Editor at CSO Online and produces the CSO Security Perspectives Podcast. In the Security Perspectives podcast Bill talks with a variety of industry experts on a wide range of security topics. (Bill did lower his usually impeccable standards once and interviewed me for an episode).
Brenno deWinter is a journalist and podcaster- but most of his content is in his native Dutch. Brenno has now started posting his English-language interviews as a separate podcast, The Security Update, for those of us who don't speak Dutch. (Brenno also does the Laura speaks Dutch podcast for those English-speakers who want to learn Dutch).