Hackers Crank the Heat on Europe’s Supermarket Freezers to Above 120 Degrees

A facts-only brief, written by a local AI model from this article in The Wall Street Journal, November 4, 2026. It may contain mistakes, and it is not the article: the full story is at wsj.com.

Cyberattacks on supermarket refrigeration systems disrupted food stores across Europe starting early Monday, causing temperature spikes that forced retailers to discard spoiled inventory. The incidents affected at least six countries, including Germany, Sweden, and Belgium, where stores reported losing dairy and frozen goods. EU Agriculture Commissioner Christophe Hansen characterized the events as a deliberate effort to undermine consumer confidence in the food supply chain.

Background

• French cyber authorities warned that controllers made by Danfoss and Copeland were vulnerable to hacking, urging users to isolate them from the internet.
• A similar incident in mid-October disrupted refrigeration at approximately 700 French supermarkets, including around 80 Carrefour locations.
• Censys researcher Silas Cutler reported that more than 800 vulnerable Danfoss systems remained online as of Monday, including 41 in the United States.
• Claroty CTO Amir Preminger stated that researchers used AI to build an attack program for refrigerator systems in about 30 minutes at a cost of roughly $6.

Read the full article at wsj.com

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