Via 35C3: Hunting the Sigfox: Wireless IoT Network Security
On the recent 35th Chaos Communication Congress, Florian Euchner (Jeija) held an excellent presentation on Sigfox security:
Hunting the Sigfox: Wireless IoT Network Security
Dissecting the radio protocol of Sigfox, the global cellular network for the IoT you have probably never heard of
YouTube video: https://www.youtube.com/watch?v=-l3cw_S-KiE (length: 30min).
A SiPy is used as an example of how a network access key (NAK) can be extracted at around 18:30 :-)