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Cyberattack targets refrigeration at hundreds of French supermarkets overnight

Intermarché and Coopérative U say refrigerators were hit; Paris prosecutors have opened an investigation.

Updated Oct 15, 2026 · 00:11 UTC18 reports

The short version

  • An overnight cyberattack targeted refrigeration at up to 200 Intermarché stores and almost 100 Coopérative U locations, according to the retailers.[France 24]
  • Carrefour said 80 of its supermarkets were also hit, while E. Leclerc was reported affected but did not immediately confirm.[France 24]
  • Paris prosecutors confirmed an investigation and said the attack prompted fire outbreaks; Coopérative U's chief executive called it unprecedented.[France 24]
  • Whether other chains, including Carrefour Market and Monoprix, were affected remains unconfirmed, and the attack's cause and full scope are not yet established.[France 24]

Key facts

  • Up to 200 Intermarché stores and almost 100 Coopérative U locations had refrigerators affected in an overnight cyberattack, according to the retailers.[France 24]
  • Carrefour said 80 of its supermarkets had been hit by the cyberattack.[France 24]
  • The Paris prosecutor's office confirmed an investigation into the large-scale cyberattack affecting refrigerators at several food retail chains.[France 24]
  • Paris prosecutors indicated the attack prompted fire outbreaks.[France 24]
  • Coopérative U chief executive Dominique Schelcher described the attack as unprecedented and said refrigeration systems had been affected since Sunday night.[France 24]
  • Intermarché told AFP that affected branches would have to discard all fresh and frozen products.[France 24]
  • Danfoss said most affected equipment was legacy product no longer receiving software or security updates.[Hacker News]

What remains uncertain

  • E. Leclerc's involvement is unconfirmed: BFM TV reported it, and E. Leclerc did not immediately confirm the information.[France 24]
  • Carrefour Market and Monoprix involvement is unconfirmed; a specialist retail news site reported it and the companies have not confirmed it.[France 24]
  • The attack's cause and full scope are not yet established; prosecutors have confirmed only that an investigation has been opened.[France 24]
  • Danfoss's account that the affected equipment was legacy product is the manufacturer's own statement and is not independently verified in the reporting.[Hacker News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.