Which smart bulbs should you buy (from a security perspective)

Matthew has a new blog post about smart lightbulb security:

People keep asking me which smart bulbs they should buy. It’s a great question! As someone who has, for some reason, ended up spending a bunch of time reverse engineering various types of lightbulb, I’m probably a reasonable person to ask. So. There are four primary communications mechanisms for bulbs: wifi, bluetooth, zigbee and zwave. There’s basically zero compelling reasons to care about zwave, so I’m not going to.[…]

https://mjg59.dreamwidth.org/51910.html