IoT Security - Not many or concerned, For those who are concerned, here a good essay from Mr. Bruce Scheiner

Our biggest IoT security risks will stem not from devices we have a market relationship with, but from everyone else's cars, cameras, routers, drones

Basically, sellers don't compete on safety features because buyers can't efficiently differentiate products based on safety considerations

More here:
https://www.schneier.com/blog/archives/2017/10/iot_cybersecuri.html