What fridge hacking across Europe means for your devices

Cyberattacks on fridges and freezers across Europe have spoiled food and put blood supplies at risk.
The head of the UK's National Cyber Security Centre says the French fridges were using default passwords, and supermarkets from Sweden to Belgium and Estonia have also been hit.
So should your own fridge be connected to the internet?
What about lights, air con and baby monitors?
Cyber security expert Troy Hunt explains why supermarket fridges should never have been on the open internet and how to choose safer connected devices.