Particle.news
Download on the App Store

US and UK Press Banks to Test Anthropic’s Mythos as Cyber Risk Concerns Mount

Access to the model remains restricted to vetted partners under Project Glasswing.

Overview

  • Top US officials, including Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell, brought major bank leaders to Washington to brief them on risks tied to Anthropic’s Mythos and to encourage defensive testing, with JPMorgan reported to have started internal trials.
  • UK authorities, including the Bank of England, the Financial Conduct Authority and HM Treasury, are working with the National Cyber Security Centre and plan to warn big banks, insurers and exchanges about related cyber threats in the coming fortnight, according to the Financial Times.
  • Anthropic is keeping Mythos out of public release and is granting limited access through Project Glasswing to select technology and financial partners so they can find and fix weaknesses before similar tools spread more widely.
  • The company says the system can turn software bugs into working hacks across major operating systems and browsers, citing examples like a 27‑year‑old flaw in OpenBSD, a 16‑year‑old bug in FFmpeg and chained Linux kernel issues, with most findings withheld until patches are ready.
  • Independent researchers and industry voices question how novel these results are, reporting that cheaper open models reproduced much of the showcased analysis and calling for outside verification and coordinated patching across widely used software.