French bank hit by cyberattack with €118m reportedly stolen

French banking group Crédit Mutuel Arkéa has been hit by a cyberattack involving fraudulent transactions, with the amount reportedly stolen estimated at €118million.

The group is based in Brittany and includes the Crédit Mutuel de Bretagne and Crédit Mutuel du Sud-Ouest federations. It confirmed the attack on November 4.

The group said the incident was now under control and that customers would face “no financial consequences,” according to Franceinfo.

However, it said that some transactions have been temporarily suspended as a precaution. It said these services would resume once the necessary security checks had been completed.

In addition, the bank’s mobile app has not been accessible since this morning, displaying an error message when customers try to connect.

The bank did not confirm the amount stolen. The figure was reported by Le Télégramme, which cited more than $133million (approximately €118million).

The incident was brought to public attention by cryptocurrency investigator ZachXBT, who reported on November 2 that “an EU entity is suspected of losing more than $106million”.

In subsequent updates, he identified an additional $27 million in withdrawals, bringing the estimated total to more than $133million (€118million). On November 4, he named Crédit Mutuel Arkéa as the alleged victim.

French media reports said the Banque de France was notified of the incident by Crédit Mutuel Arkéa, although the bank has not publicly confirmed these details or identified those responsible for the attack.