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Summary
The trend toward AI-driven vulnerability discovery is already independently verified, even as Anthropic's specific numbers for Claude Mythos stay contested. Several milestones predate Mythos. XBOW topped HackerOne's US leaderboard, and Claude Opus 4.6 surfaced more than 500 high-severity open source vulnerabilities. A system card teardown shows Anthropic's 72.4% Firefox exploit rate falls to 4.4% once pre-discovered bugs are removed. Anchor your planning to the established direction of travel and treat the magnitude of the latest headline with caution. The highest-leverage work is patching, segmentation, identity hygiene, and the governance conversation about patching disruption.
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