French Investigators Probe Supermarket Cyberattack That Could Cost ‘Millions Of Euros’

In Data Breach News, News
October 13, 2026

Forbes reports on the massive cyberattack in France where unknown threat actors literally turned up the heat on supermarket refrigeration and freezer units, causing all the food to defrost.  In some cases, fires even erupted.

  • The attack, which took place Sunday, impacted hundreds of stores spanning several major supermarket groups, including Carrefour, Monoprix, Intermarche and Cooperative U.
  • Impacted fridges used software developed by the Danish firm Danfoss, which reportedly said Monday many of the affected units had “reached end of life and no longer receive software or security updates,” advising supermarkets to keep their software updated.

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Exact losses are not known, but some of the impacted supermarket chains have suggested they are facing steep financial hits. Thierry Cotillard, CEO of supermarket group Intermarché, told French outlet BFM TV he expects losses to total “tens of millions of euros nationwide in a single day” (10 million euros is equal to more than $11.1 million). Les Mousquetaires, parent company of Intermarché, told CNBC the losses could amount to “several million euros.”

Read more at Forbes.