Claude Mythos Alarms UK Government — Gizmodo Reports British Officials 'Officially Frightened'

Gizmodo·low signal

Gizmodo reports the UK government has expressed official concern over Claude Mythos Preview's cybersecurity capabilities, adding an international policy dimension to Anthropic's restricted-release decision. The reaction follows disclosure that Mythos autonomously discovered zero-days in every major OS and browser, including a 27-year-old OpenBSD bug and a 16-year-old FFmpeg vulnerability. The UK response suggests frontier model cybersecurity capabilities may trigger regulatory action beyond the US tech consortium approach of Project Glasswing.