The European Commission turned to the European Cyber Crises Liaison Organisation Network (EU-CyCLONe) mechanism for coordination and information sharing after temperatures suddenly rose in supermarket refrigeration and freezer units in several countries.
European Commission spokesperson Thomas Regnier told Anadolu Agency (AA): "These incidents show that cyberattacks can disrupt services, affect businesses and directly interfere with citizens' daily lives."
Regnier said the step was taken because more than one member state had been affected, adding that they would continue working with member states to strengthen cybersecurity across the bloc.

Supermarkets affected in seven countries
According to information compiled by AA, temperatures suddenly rose in the coolers and freezers of some supermarket chains in Belgium, Luxembourg, Sweden, Estonia, Ireland, the Netherlands and Finland during the night. The affected stores removed products from sale after the cold chain was broken.
Dozens of Delhaize stores and 15 Carrefour stores in Belgium were affected. Stephan Moelans, CEO of Sabcobel, which operates Delhaize's refrigeration systems, said the units had been switched to defrost mode in the attack. Thirteen SuperValu stores in Ireland were also among those affected.
A butcher's shop in Belgium said that meat products worth approximately 15,000 euros had been thrown away. The manager of an ICA store in Stockholm said the temperature of the freezers had reached 50 degrees.
No one has claimed responsibility
No one has yet claimed responsibility for the attacks. Sweden's National Cybersecurity Center declined to speculate about the perpetrators and said it had identified numerous internet-exposed industrial control devices in the country that required updates.
Tom Hegel, a researcher at cybersecurity company SentinelOne, said the absence of a ransom demand suggested that the attacks were intended as sabotage.
In France, the refrigeration systems of approximately 700 supermarkets were also disabled in a similar attack in October. Fires broke out in some stores, and numerous products were destroyed.