The Canadian financial regulator has warned major banks and insurance companies that advanced models like Claude Mythos could reduce the time available for security teams to identify and patch vulnerabilities, as these systems can search for weaknesses and accelerate attack steps that previously required human expertise and more time.

A direct message to security and risk officials

According to a report published by Reuters, the Office of the Superintendent of Financial Institutions in Canada sent a warning to technology, cybersecurity, and risk management officials at major banks and insurance companies. It noted that advanced AI models could increase the speed of attacks and put pressure on aging banking systems. The regulator also called on institutions to strengthen their response mechanisms, update their vulnerability-handling plans, and share security practices more quickly.

Old systems face a new test

The warnings carry extra weight because Claude Mythos was designed with powerful capabilities for identifying vulnerabilities, analyzing systems, and searching for ways to exploit weaknesses. Meanwhile, many financial institutions rely on an aging technical infrastructure that is difficult to update quickly. Canadian banks have begun increasing their investments in AI-based defense tools and reducing their reliance on some external suppliers as they attempt to use the same technology to counter attacks that could help execute them.