We Reproduced Anthropic's Mythos Findings With Public Models
Summary
Vidoc Security analyzes Anthropic Mythos findings by reproducing the patched public examples using open-source tools and public models such as GPT-5.4 and Claude Opus 4.6. The study shows that several Mythos building blocks are available outside gated stacks, with varying success across categories including FreeBSD, OpenBSD, FFmpeg, Botan and wolfSSL. The authors argue that the real moat is not model access but validation, prioritization, and operationalization within security workflows, and they stress the need for enterprise tooling and SSDLC integration to harness AI for AppSec.