Hackers infiltrated the control systems of three cold-storage facilities holding critical blood products in France, manipulating temperature settings in what appears to be a widening campaign targeting refrigeration infrastructure across Europe.

The attacks, which have increasingly disrupted refrigeration systems at supermarkets and other facilities across the continent, are raising concerns about the vulnerability of essential services to cyber intrusions.

From food supplies to potentially life-saving medical products, the incidents have exposed how remotely controlled equipment can become a weapon against critical infrastructure...

From food supplies to potentially life-saving medical products, the incidents have exposed how remotely controlled equipment can become a weapon against critical infrastructure.