the fact that's even possible worries me.

1 billion transistors and 40 million lines of code in my smoke detector.

hurrah, the smoke detector crashed again!

Thanks for that link. I suppose it's good that some effort from experienced people has been made, but this really concerns me that the security stiffening was a "side project" of some Google folks.

"Board member and investor Bill Maris of Google Ventures says that some of Google’s security team helped stiffen Nest’s safeguards as a side project."