There are two pieces of news about smart home devices security.
According to the articles, they could be vulnerable to hacking.
If you see more details, please follow the links.
Title : Researcher criticises 'weak' crypto in Internet of Things alarm system
Source : The Register
Link : http://www.theregister.co.uk/2015/12/31/iot_alarm_crypto/
Title : Internet-connected homes open the door to hackers
Source : Cnet
Link : http://www.cnet.com/news/internet-connected-homes-open-the-door-to-hackers/