The cold chain needs a cyber access stop-list for remote maintenance

Cyberattacks against refrigeration systems have turned control-system security into an operational issue for the entire meat chain. A November situation update by the French refrigeration-industry association SNEFCCA reports further attacks on supervisory systems, especially in food retail, and says the threat remains active. The issue is not framed as refrigeration in isolation: the installation is part of the operator’s wider information system.

The association identifies practical risk points: equipment accessible from the internet, weak or long-unchanged passwords, outdated software and firmware, and remote connections that do not meet good cybersecurity practice. It also notes that temporary administrator credentials used during maintenance may have been compromised. These are access and governance failures, not conventional refrigeration faults.

Its most consequential recommendation is operational. Where a system has a high vulnerability level and minimum security conditions are not met, remote access should be suspended temporarily until the customer’s infrastructure is remediated. Customers should be formally informed; alarm checks during that period must be carried out locally. The guidance also calls for multi-factor authentication, immediate removal of unused accounts and a strict password policy.