CISA said five US agencies published on November 5 a fact sheet warning of ongoing cyber activity targeting industrial refrigeration and cold-chain monitoring systems.

The attackers target temperature controllers in supermarkets and cold-storage facilities, and successful exploitation could change temperatures, risking fires and inventory loss. According to CISOVoice, the warning follows two waves of attacks on supermarket freezers in Europe, with officials suspecting Iran-linked hackers — a hypothesis not officially confirmed.