Suspected cyberattacks have triggered temperatures to rise in grocery store refrigeration systems in a growing number of countries across Europe.
Overnight temperature spikes were recorded in stores in Belgium, Estonia, Ireland, Luxembourg and Sweden.
On Monday, retailers and authorities pointed to alleged cyberattacks that underscored the vulnerability of systems that once largely operated mechanically.
SuperValu, Ireland’s third-largest supermarket chain, said a specific model of refrigeration systems has been affected by a “cyber incident” at 13 of its 223 stores.
The Belga news agency reported overnight temperature increases at dozens of Ahold Delhaize stores in Belgium and Luxembourg.