U.S. Agencies Warn Refrigeration Controller Attacks Could Cause Fires and Inventory Losses
U.S. government agencies have warned that threat actors are actively targeting industrial refrigeration and cold-chain monitoring systems globally with an aim to cause service disruptions, fire hazards, and loss of inventory.
U.S. government agencies have warned that threat actors are actively targeting industrial refrigeration and cold-chain monitoring systems globally with an aim to cause service disruptions, fire hazards, and loss of inventory.
According to the U.S. Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), Health and Human Services (HHS), Department of Agriculture (USDA), and Department of Transportation (DOT), threat actors are likely to exploit authentication bypasses, arbitrary code injection, and weak configurations to gain access to these systems and cause the following effects - In response to the threat, owners and operators are being urged to use strong authentication, keep systems updated, identify any systems that are accessible from the internet, isolate operational technology (OT) devices, change default passwords, retire and replace legacy devices, remove unnecessary remote access, and secure necessary remote access.
In recent weeks, threat actors have targeted hundreds of supermarkets across Europe by exploiting weaknesses in internet-accessible refrigeration controllers to raise temperatures, in some cases to as high as 50 degrees Celsius (122 degrees Fahrenheit), or force cooling units into defrost mode, spoiling food and resulting in financial losses.
Targets of these attacks ranged from major supermarket chains to small grocers and butchers in Belgium, Estonia, Finland, France, Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Sweden, and the U.K. Among those targeted was the French Blood Establishment, which confirmed that a cybersecurity incident affecting a refrigeration equipment provider had raised temperature and defrost settings to extremely high levels at three facilities used to store blood plasma.
While exposure numbers are high, they're hardly surprising: ICS exposure is a problem that's been reported on and warned about for years.
The attack surface management platform described the refrigeration attacks across Europe as the latest addition to a list of other recent incidents targeting critical infrastructure, including gas station tank gauges, air raid systems, and water towers.
Data from Censys shows that there are still hundreds of Danfoss StoreView instances exposed globally, with most of them located in France, although the number has dropped significantly from 3,004 to 708 between October 9 and November 5, 2026.
The Copeland/Dixell XWEB exposure, likewise, has declined from 3,708 to 2,420.
What happened
U.S. government agencies have warned that threat actors are actively targeting industrial refrigeration and cold-chain monitoring systems globally with an aim to cause service disruptions, fire hazards, and loss of inventory.
According to the U.S. Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), Health and Human Services (HHS), Department of Agriculture (USDA), and Department of Transportation (DOT), threat actors are likely to exploit authentication bypasses, arbitrary code injection, and weak configurations to gain access to these systems and cause the following effects - In response to the threat, owners and operators are being urged to use strong authentication, keep systems updated, identify any systems that are accessible from the internet, isolate operational technology (OT) devices, change default passwords, retire and replace legacy devices, remove unnecessary remote access, and secure necessary remote access.
In recent weeks, threat actors have targeted hundreds of supermarkets across Europe by exploiting weaknesses in internet-accessible refrigeration controllers to raise temperatures, in some cases to as high as 50 degrees Celsius (122 degrees Fahrenheit), or force cooling units into defrost mode, spoiling food and resulting in financial losses.
What changed
Targets of these attacks ranged from major supermarket chains to small grocers and butchers in Belgium, Estonia, Finland, France, Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Sweden, and the U.K. Among those targeted was the French Blood Establishment, which confirmed that a cybersecurity incident affecting a refrigeration equipment provider had raised temperature and defrost settings to extremely high levels at three facilities used to store blood plasma.
While exposure numbers are high, they're hardly surprising: ICS exposure is a problem that's been reported on and warned about for years.
Who is affected
The attack surface management platform described the refrigeration attacks across Europe as the latest addition to a list of other recent incidents targeting critical infrastructure, including gas station tank gauges, air raid systems, and water towers.
Why it matters
Data from Censys shows that there are still hundreds of Danfoss StoreView instances exposed globally, with most of them located in France, although the number has dropped significantly from 3,004 to 708 between October 9 and November 5, 2026.
The Copeland/Dixell XWEB exposure, likewise, has declined from 3,708 to 2,420.
What remains unknown
It's unclear who is behind the hacking spree.
What to watch next
Watch for additional victim details, indicators of compromise and follow-on exploitation reports.
Watch for revised vendor guidance, fixed versions and mitigation updates.