Harden cooling systems now, feds warn critical infrastructure operators amid attacks
US feds warn critical infrastructure operators to harden cooling systems amid European supermarket hacks.
US federal agencies have issued a warning to critical infrastructure operators to secure their cooling systems following recent cyberattacks in Europe that disrupted supermarket refrigeration and caused significant food spoilage. The advisory highlights the potential for malicious actors to exploit unpatched or internet-accessible controllers to alter settings, leading to inventory loss and equipment hazards. The warning comes amid heightened concerns about hybrid threats to infrastructure.
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The lesson from this incident
Full lessonCyberattackers exploited unpatched and internet-accessible industrial cooling controllers in European supermarkets, causing refrigeration failures and significant food spoilage. The root problem is a failure to apply available patches and to isolate operational technology (OT) systems from the public internet — two well-established security hygiene practices. When critical physical infrastructure controllers are reachable from the internet without compensating controls, a single successful exploit can translate directly into real-world harm. This incident underscores that OT/ICS environments carry the same vulnerability risks as IT networks but with far greater physical and financial consequences.
What helps against this
How we list vendors- Zero trust network access (ZTNA)
Remote access no longer means exposing VPN appliances to the internet.
- Vulnerability scanning and prioritisation
You know which systems are vulnerable, and which ones to fix first.
- Automated patch management
Known holes get closed in days, not months.