Bangladesh, Nov. 6 -- The alleged theft of €118 million from French banking group Crédit Mutuel Arkéa is more than another high-profile cybercrime incident. It is a warning about the growing vulnerability of modern financial institutions to attacks that exploit weaknesses beyond their own technological infrastructure. Although the bank insists that customer funds and personal information remain secure, the incident raises serious questions about third-party cybersecurity, financial accountability and the ability of banks to protect their assets in an increasingly interconnected digital economy.

According to the banks November 4 announcement, hackers infiltrated its systems through the platform of a third-party service pro...