Coop, Delhaize, and Carrefour Hit by Cyberattacks as Refrigeration Systems Fail

Post date: November 3, 2026 · Discovered: November 3, 2026 · 4 posts, 122 comments

Supermarkets in Europe, including Coop, Delhaize, and Carrefour, have been hit by cyberattacks that caused refrigeration systems to fail, with temperatures rising to dangerous levels. The attacks are linked to poor security practices, outdated firmware, and weak network configurations. The incidents have led to spoiled food, reduced supply, and health risks.

Commenters are sharply divided on the cause. Some, like CompactFlax, argue that supermarkets are exposed to the public internet with weak passwords, making them easy targets. Others, such as dgriffith, suggest that remote monitoring is a necessary operational tool, but the lack of secure internal networks and updates led to the breach. Blackmist proposed a radical solution: replacing internet-connected systems with battery-powered thermometers.

The community consensus points to poor IT security and outdated firmware as the primary causes. However, there are fault lines between those who blame weak passwords and those who argue for better network configurations. The debate highlights the urgent need for stronger security measures in critical infrastructure.

Key Points

#1Supermarkets are exposed to the public internet with weak passwords

CompactFlax argues that weak passwords make supermarkets easy targets for hackers.

#2Remote monitoring is a necessary operational tool

dgriffith suggests that remote monitoring is essential but the lack of secure internal networks and updates led to the breach.

#3Battery-powered thermometers could replace internet-connected systems

Blackmist proposed using battery-powered thermometers with alerts as a simple and effective alternative.

#4Poor IT security is treated as a cost center

tempest claims that IT security is often seen as a cost center, leading to underinvestment in security measures.

Source Discussions (4)

This report was synthesized from the following Lemmy discussions, ranked by community score.

372
points
Supermarket freezers across Europe hit by second suspected cyber-attack
[email protected]·110 comments·11/2/2026·by MicroWave·theguardian.com ↗
42
points
Frozen part II: Hackers remotely defrost produce in Euro supermarkets ... again
[email protected]·11 comments·11/2/2026·by Powderhorn·theregister.com ↗
25
points
Shop fridges and freezers across Europe hit by fresh suspected cyber-attack
[email protected]·2 comments·11/3/2026·by SocialistVibes01·theguardian.com ↗
20
points
Fridge cyberattack hits supermarkets across Europe
[email protected]·5 comments·11/3/2026·by xiao·rfi.fr ↗