I just read two good columns at SecurityFocus. The first, A Changing Landscape, is by Red Cliff consultant, fellow former ex-Foundstone consultant, and Extrusion Detection contributing author Rohyt Belani. He theorizes about the rise of client-side attacks and their effect on statistics reported by CERT/CC.
The second article is an interview with FX of Phenoelit. He discusses exploiting Cisco IOS, which is fascinating.