Cyberattack on French supermarkets exposes risks to cold chain infrastructure
A cyberattack that altered the temperature of connected refrigerators in French supermarkets exposed the digital risks facing cold chain infrastructure.
The attack recorded on October 11 and 12, 2026, at French supermarkets exposed the cybersecurity risks associated with connected refrigeration systems. The Paris Prosecutor’s Office described the incident as a large-scale attack in which criminals remotely altered the refrigerators’ defrost cycles, raising temperatures to 50°C for hours.
The incident caused millions in losses due to the destruction of tons of food and near-fires in some stores, turning a technological disruption into a physical risk for facilities.
The vulnerability lies in digital control systems.
The vulnerability was concentrated in the digital control layer, rather than in the mechanical components. Modern supermarkets use connected controllers to manage temperatures, alarms, and compressors, making these systems vulnerable to remote manipulation of operating conditions.
Vulnerabilities that can facilitate these attacks include control interfaces directly accessible from the Internet, outdated firmware, equipment that has exceeded its service life, weak passwords, insufficient controls for suppliers’ remote access, and a lack of segmentation between administrative and refrigeration networks.
Cold chain security therefore also depends on protecting the digital systems that regulate its operation, in addition to maintaining the physical infrastructure in proper condition.
In Colombia, the digitalization of refrigeration systems coexists with varying levels of industrial security, particularly when older equipment is connected to the Internet. The Ministry of Information and Communications Technologies (MinTIC) reported 36 billion cyberattacks in 2024.
Although the country has a general regulatory framework that includes Decree 338, CONPES 3995, RETSIT, and the 2025–2027 National Strategy, it still lacks specific mandatory requirements for refrigeration controllers. Meanwhile, the private sector is making progress in the voluntary adoption of international standards such as ISA/IEC 62443 and NIST SP 800-82.
Measures to prevent and contain attacks.
The Colombian Association of Air Conditioning and Refrigeration (ACAIRE) proposes ten preventive measures for companies:
- Inventory all connected controllers.
- Identify equipment exposed to the Internet.
- Eliminate that exposure when it is not essential.
- Use VPNs or multifactor authentication for remote access.
- Segment refrigeration and administrative networks.
- Change default passwords.
- Keep software up to date.
- Replace equipment that no longer receives cybersecurity support.
- Monitor abnormal operating changes and alarms.
- Maintain configuration backups to enable local operation.
If an intrusion is suspected, the priority is to contain the incident without jeopardizing the cold chain. The protocol calls for restricting remote access and disconnecting the controller from the Internet, avoiding the indiscriminate shutdown of critical equipment, segmenting the compromised network, recording temperatures manually, preserving digital evidence and activity logs, and notifying the technology department and entities such as COLCERT.
ACAIRE is preparing a sectoral roadmap.
The industry must incorporate digital risk management into its operational processes. As the document summarizes: “the equipment is connected, therefore I must also manage its cyber risk”.
To guide this transition, the association will develop a roadmap covering five areas: sectoral assessment, guidelines based on international standards such as NIST and ISA/IEC 62443, workforce training, cybersecurity requirements from the design stage, and coordination with MinTIC and COLCERT.
The initiative aims to ensure that refrigeration modernization advances alongside cyber resilience through measures that reduce vulnerabilities and enable responses to potential incidents without compromising cold chain continuity.
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