Read this a few months ago and felt it was relevant for here.
http://www.forbes.com/sites/thomasbrewster/2016/04/01/philips-lightbulb-hack-epileptic-seizures-data-theft/#b45f937ba2c2
https://www.scribd.com/doc/306620189/Eyal-Ronen-and-Adi-Shamir-Hack-Lightbulbs
Let me know if you need alternative non-paywall/ad blocking sources. I have them, somewhere.