France has launched a formal investigation into a series of cyber-attacks on supermarkets across Europe, implicating an Iranian hacking group believed to be connected with the Islamic Revolutionary Guard Corps (IRGC). The attacks, which occurred in late October, resulted in the spoilage of tons of chilled and frozen food by raising the temperatures of refrigeration units in hundreds of stores. Foreign Minister Jean-Noël Barrot has denounced the incident as an "unprecedented act of aggression" against French national security and interests. The Iranian government has yet to respond officially, but some Iranian media outlets have dismissed the allegations as unfounded. If confirmed, this would mark the first major cyber-attack on European soil with potential links to state-sponsored hackers. The Paris prosecutor has opened an investigation into a hacking unit called Shahid Kaveh, which is suspected of being responsible for the attacks. This group is reportedly affiliated with the electronic and cyber center of the IRGC and is believed to be directly employed by the Iranian regime. The French government has summoned the Iranian ambassador to Paris to register a strong protest against this incident and has threatened to take further action if necessary. Similar incidents involving malfunctioning refrigerators have also been reported at small numbers of US military bases, leading to speculation about possible coordinated cyber-attacks. As attribution of cyber-attacks can be difficult due to the anonymity of hackers, the French government has not yet released detailed evidence linking the attacks to Iranian state actors.