One of our favourite examples involves the Satis smart toilets in Japan, whose Bluetooth connections could be hijacked in order to harass and soak their occupants.
"There's much more to smart home security than what a device might reveal about itself, and thus about you," says Paul Ducklin, senior technologist at IT security company Sophos.
"Attackers can disable intruder alarms, turn smart TV's into snooping devices or simply use the smart devices to access other systems on your home network.
As Whitehouse points out, most smart home systems connect to a cloud-based portal that's rather hard to compromise, but the local network is a much softer target.
Z-Wave wants to create a genuinely hack-proof platform, and to do that it's hired hackers to test the security measures in its S2 security framework, which is due for launch in summer 2016 and which will be available for existing Z-Wave devices.
Z-Wave is also "actively planning" hackathons, where hackers are given carte blanche to try and break security, later this year.