Attackers Heat French Supermarket Fridges Up to 50°C by Hijacking Danfoss Controllers

Summary: Attackers remotely took control of fridges and freezers at hundreds of French supermarkets on the night of October 11, reaching them through Danfoss controllers that maintenance firms manage remotely; Les Mousquetaires said its Intermarché units were put into defrost and heated to as much as 50°C. CERT-FR, part of ANSSI, said it was aware of numerous compromises affecting the AK-SM and AK-SC controller series and told operators to disconnect the controllers or filter access to them.
Bottom line: Danfoss said most of the units hit were older models it no longer updates - the AK-SM 800 was declared end-of-life in May 2021 and the AK-SC 355 was phased out in 2016 - and Thierry Cotillard of Les Mousquetaires told BFMTV he expected losses of tens of millions of euros across France.

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