Blockchain investigator ZachXBT has named Crédit Mutuel Arkéa as the alleged victim of a cryptocurrency theft exceeding $133 million, expanding an investigation into suspicious withdrawals from multiple centralized exchange accounts. The November 4 disclosure identified the French banking group after earlier alerts referred only to an unnamed European institution. ZachXBT described Arkéa as holding approximately $235 billion in assets and said the suspected attack continued over several days, with potential additional losses involving over-the-counter transactions.