Canada warns banks about Anthropic’s Claude Mythos, saying the AI model could help attackers identify vulnerabilities faster and increase cyber risks.

Artificial intelligence tools have indeed made the jobs of several people easier but they have also emerged as a weapon for cyberattackers. After the International Monetary Fund (IMF) highlighted the risks posed by Anthropic’s Claude Mythos, Canada has now sounded the alarm over the advanced AI tool. According to Reuters, the Canadian banking regulator has warned that powerful AI models may help attackers discover security flaws much faster than before, leaving banks with far less time to respond.
Canada’s Banking Watchdog Sends Warning To Financial Institutions
As per Reuters, Canada’s banking regulator, the Office of the Superintendent of Financial Institutions (OSFI), sent an email in April to chief technology officers, chief information security officers and chief risk officers at the country’s biggest banks and insurance companies.
Reportedly, the regulator warned that advanced AI models, including Anthropic’s Claude Mythos, could speed up cyber threats by shrinking the time available to detect and fix security weaknesses.
The regulatory body reportedly wrote to banks in an email, “Advanced artificial intelligence models, such as Anthropic Claude Mythos, significantly compress the timeframe for effective risk mitigation. Accordingly, this bulletin is grounded in our existing guidance and outlines sound practices that institutions can adopt to enhance the speed and effectiveness of risk identification, mitigation and response.”
For banks that operate large and complex systems, it means having significantly less time to patch security flaws before criminals attempt to exploit them.
The OFSI has also published a public bulletin on generative and agentic AI. It reads, “OSFI takes a technology-neutral, risk-focused approach to emerging technologies, including advanced artificial intelligence models such as Mythos. Our focus is not the technology itself, but how federally regulated financial institutions govern and manage the risks associated with its use.”

