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See also: revising the advisability of building fridges with the capability to be set to 80°C!!!

That was always a successful argument in the utility sector: why place generation assets under unnecessary risk with cyber controls, when "the old-fashioned way" of physical and analog security was more robust and resilient?

Air gapping is going to be next thing.

The Battlestar Galactica defence.

Having supermarket fridges and freezers connected to the internet is a good thing provided that the internet is only used for monitoring the temperature. Allowing it to be used for switching on the defrost heaters is asking for trouble.

That's why when the did the re-boot of Battlestar Galactica they always communicated on handsets physically connected with squiggly chords. So the Cylons would not hack in to vital networks. Commander Adama was right!!! He's the reason I carry a flip to this day.

Unless you need to access equipment remotely, putting it on a network connected to the Internet seems daft. My new camera came with a warning that if you connected it to your wi-fi it created an insecure entry point. I decided taking the memory card out and slotting in the computer was less hassle.

Oh god it was so much worse. They were actually on the internet natively without even a firewall.

Remote monitoring is useful, but doesn't require the ability to set the temperature, which is only rarely done on a supermarket's freezers, at least so in the one I work at. But freezers do fail, and the earlier you know, that gives you more time to move food to another.