Google’s Ubiquity Dev Summit just ended, some of the video is online. There is one talk on IoT security:

https://ubiquity.withgoogle.com/

https://ubiquity.withgoogle.com/stream

https://ubiquity.withgoogle.com/schedule

“Brillo has a defense-in-depth strategy to device security built around verified boot, software fault isolation, and field updates of devices. Paul Covell explains the architecture of each of these mechanisms and how they work together to help Brillo devices be more resistant to exploit and create mechanisms for recovery if an exploit occurs.“