In a letter to bank CEOs, ECB chief supervisory officer Claudia Buch required lenders to submit action plans by end-October to address rising cybersecurity threats from advanced AI models, citing examples such as Anthropic’s Claude and Mythos. Buch urged faster software patching, strengthened AI-driven cyber defenses, tighter oversight of third-party vendors and long-term infrastructure modernization. ECB President Lagarde last month warned AI could trigger a financial crisis and said CEOs must

In a letter to bank CEOs, ECB chief supervisory officer Claudia Buch required lenders to submit action plans by end-October to address rising cybersecurity threats from advanced AI models, citing examples such as Anthropic’s Claude and Mythos. Buch urged faster software patching, strengthened AI-driven cyber defenses, tighter oversight of third-party vendors and long-term infrastructure modernization. ECB President Lagarde last month warned AI could trigger a financial crisis and said CEOs must ensure readiness and recognize the need for substantial investment. The ECB has stress-tested 109 banks under a severe cyberattack scenario and said most detected vulnerabilities have been fixed.