Get ready for a seismic shift in cybersecurity as Japan's financial giants are about to gain access to a powerful new AI tool. Three of the nation's megabanks – Mitsubishi UFJ Financial Group (MUFG), Mizuho Financial Group, and Sumitomo Mitsui Financial Group (SMFG) – are slated to receive access to Anthropic's groundbreaking vulnerability-hunting AI, codenamed Mythos, within the next couple of weeks.

This move marks a significant expansion for Anthropic's highly restricted Project Glasswing, which has thus far been exclusively available to a select few partners in the US and Europe. The inclusion of these Japanese megabanks is particularly noteworthy as it's the first time an Asian company will be part of this exclusive preview. The announcement was reportedly made dur ing meetings in Tokyo involving US Treasury Secretary Scott Bessent, underscoring the geopolitical significance of this cybersecurity initiative. The onboarding is expected to be completed by the end of May.
Mythos is no ordinary AI. Since its disclosure, it has been described as a "category-shifting event" by regulators and industry leaders. In internal testing, it has already unearthed thousands of previously unknown zero-day vulnerabilities across major operating systems and web browsers, even demonstrating the ability to craft working exploits that can bypass security measures like sandboxing. For instance, it recently helped Mozilla identify and patch 271 vulnerabilities in a single pass for Firefox 150. Anthropic is maintaining strict control over Mythos's deployment through Project Glasswing, with a limited number of partners, and providing access on a case-by-case basis. Japan's entry into this program follows similar briefings for American and British banks, highlight ing a global effort to bolster cybersecurity defenses against advanced threats. In parallel, Japan is establishing a public-private working group to address Mythos-class risks, involving major banks, the Bank of Japan, and local branches of AI firms like Anthropic and OpenAI. This collaborative group aims to identify exposures, implement countermeasures, and develop contingency plans for a coordinated system-wide patching effort. For the banks, the immediate focus is on operational integration, with Mythos being used to identify weaknesses in their own systems and assist in remediation, not to publicise exploits. This controlled approach, as seen with the Mozilla example, ensures that vulnerabilities are patched discreetly and effectively, rather than being exposed to malicious actors.
Fuente Original: https://thenextweb.com/news/anthropic-mythos-japan-megabanks-access
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