Finance ministers, central bankers and financiers have expressed serious concerns about a powerful new artificial intelligence (AI) model that could undermine the security of financial systems. The development of the Claude Mythos model by Anthropic has led to crisis meetings, after it found vulnerabilities in every major operating system and browser. Experts have warned that the model potentially has an unprecedented ability to identify and exploit cybersecurity weaknesses. Canadian Finance Minister François-Philippe Champagne told the BBC that Mythos had been discussed extensively by his peers at the key International Monetary Fund (IMF) meeting in Washington DC this week. Certainly it is serious enough to warrant the attention of all the finance ministers, he said. He likened the situation to dealing with an unknown threat, emphasizing the necessity for safeguards to ensure the resiliency of financial systems. Top bankers are to be given access to the model in advance to test out their systems. The chief executive of Barclays, CS Venkatakrishnan, stated: It's serious enough that people have to worry. We have to understand it better, and we have to understand the vulnerabilities that are being exposed and fix them quickly. He added that this is what the new world is going to be - referencing a much more connected financial system, with both opportunities and vulnerabilities. While developer Anthropic has said the model has already exposed multiple security vulnerabilities in some critical operating systems, financial systems and web browsers, governments and banks are being offered access in advance of its public release to help protect their own systems. Bank of England governor Andrew Bailey told the BBC the development had to be taken very seriously: We are having to look very carefully now what this latest AI development could mean for the risk of cyber crime. The US Treasury confirmed it had raised the issue with its major banks encouraging them to test out their systems, before any public release of Mythos by Anthropic. Financial industry sources indicated that another prominent US AI company could soon release a similarly powerful model but without the same safeguards. James Wise, a partner at Balderton Capital, described Mythos as the first of what will be many more powerful models that can expose systems' vulnerabilities. His unit is investing in British AI companies that are tackling that - companies working in AI security and safety, stating, We hope the models that expose vulnerabilities are also the models which will fix them.\