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https://uk.finance.yahoo.com/news/french-supermarket-chains-cyberattack-forced-115141288.html
This is a poetry of stupid and the hackers are the least guilty party here. Lets start with the obvious. Why freezers needs to be visible, why do they need to be remotely managed, why is not this done on dedicated internal network, why do they need firmware updates. How did we get to the point where a device that should be pid controller, compressor and alarm can be hacked.
To make you feel better - all of your nice EVs are also permanently connected and I doubt that there is air gap between the infotainment and the firmware of the battery pack. Someday someone will be able to accelerate or set on fire EV remotely. And probably soon.
Having worked as a refrigeration tech before, I may have some insight- this was almost certainly done for management and monitoring. Defrost cycles are very important to keep freezers from bricking themselves, and danfoss controllers are very common as an alternative to a mechanical time clock- because they’re fully programmable to the conditions of the specific box.
Why they were connected to the internet is probably because corporate wanted to be able to mess with it without sending someone in person. The stated reason was probably so they could set passwords but in reality it was to make in house maintenance personnel’s lives easier.
Seems to me that the smarter way to do this would be to have a site-to-site VPN between your corporate office and the store's internal network. Then the freezers remain on the "internal" corporate network and aren't exposed to the internet.
This may be shocking to professional software engineers, but most companies do not put systems on a VPN prior to those systems being hacked.
I guess a lot depends on when the system was put together, but as a professional I.T. guy, oof. Of course you put them on the VPN! That's been the sane choice for at least twenty years. If you absolutely, positively can't for some reason, then you at least whitelist the control server at the firewall level and block other traffic to the device.
Now if they were small enough not to have an I.T. department, I'd understand. But more likely I.T. was overruled.
It was probably put together by career HVAC techs who told them to set up communication via a web portal so they could initiate defrosts* on their cellphones, and then set the passwords to their lastnames.
*For those in the back who don't know, commercial freezers are supposed to have an electronic defrost that clears ice off the evaporator so it doesn't inhibit airflow. This attack worked by reprogramming that defrost to never end.
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