The European Central Bank requires banks to submit plans to address AI cybersecurity threats

The European Central Bank has requested banks to develop plans to address the growing cybersecurity threats posed by cutting-edge AI models such as Anthropic's Claude Mythos. In a letter to the chief executives of banks, the ECB's chief supervisory officer, Claudia Buch, asked lending institutions to submit action plans by the end of October.

She urged banks to accelerate software patch updates, strengthen AI-driven cyber defenses, and enhance oversight of third-party vendors, while emphasizing that banks need to modernize their infrastructure in the long term. Buch stated, "The ECB calls on all significant institutions to immediately assess the impact of the evolving threat landscape and develop comprehensive action plans outlining specific measures to strengthen relevant controls." ECB President Christine Lagarde warned last month that artificial intelligence could lead to a financial crisis and stated that bank CEOs need to ensure they are prepared and recognize that countermeasures require substantial investment. The ECB has conducted cyber attack tests under severe scenarios on 109 banks, and most of the vulnerabilities identified have been addressed.