I’m not 100% obsessed (more like 98%) with radio topics: this morning, I found this link on Hack a Day which provided a link to several articles having to do with TEMPEST. I’ve blogged about TEMPEST before, but for those who haven’t heard of it before, it’s a way of eavesdropping on electronic signals by listening for insecure, electronic emissions. I’d seen some of these before, but I hadn’t seen this work on evesdropping on USB keyboard emissions:

I also hadn’t seen TEMPEST: A Signal Problem, a paper recently released under the FOI detailing the history of TEMPEST. Very interesting.