Claude Mythos and the Cybersecurity ReckoningAnthropic’s new frontier model has found thousands of zero-day vulnerabilities across every major OS and browser. It’s not being released publicly. That tells you everything you need to know.Claude Mythos and the Cybersecurity ReckoningAnthropic’s new frontier model has found thousands of zero-day vulnerabilities across every major OS and browser. It’s not being released publicly. That tells you everything you need to know. 10 Apr 2026 5 mins read AI Anthropic Cybersecurity AI Anthropic Cybersecurity