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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.
Yes but that does require more infrastructure. It's also very possible that the units connect to a manufacturer cloud controller on the Internet only on outbound connections, which is typically reasonably secure so long as you use SSL pinning etc, or even on an IPSEC tunnel, but that the cloud controller was itself compromised in some way.
The manual for one of the affected models is available online, see page 11. The idea of a web host running on the hardware controller is... not the worst thing I've ever done, but :
Definitely worse. I was building web-accessible hardware in 2013. This was, to be fair, a couple years pre-Let's Encrypt, and SSL wouldn't have solved this specific problem.
But I still knew better than that.
Early descriptions of the attack have claimed that there was a master password for the device exposed on the same interface (unclear if it's the HTTP or XML), which allowed the control commands through in bulk.
Oh my, that is indeed dire.
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