French Operators Reduce Danfoss Refrigeration Controllers Internet Exposure by 71% After Cyber-Attack

France-based operators of Danfoss refrigeration controllers reduced their internet exposure by 71% following a cyber-attack that occurred on October 11. The significant decrease in internet-exposed controllers represents a sharp reduction in the attack surface of these industrial control systems. The response indicates operators took action to remove or isolate these devices from direct internet access after the security incident.