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We reproduced Anthropic's Mythos findings with public models
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Overview
Anthropic's Mythos and Project Glasswing suggest that advanced AI vulnerability research should be restricted, but replication studies show that similar capabilities are already present in public models. Frontier models are increasingly effective at identifying serious vulnerabilities in real software.
Summary from blog.vidocsecurity.com.
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blog.vidocsecurity.com
We reproduced Anthropic's Mythos findings with public models
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Community reactions
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Hacker News · blog.vidocsecurity.com
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Based on 5 sampled comments from this thread. Analyzed 2026-04-17.
- Praise: The discussion highlights the importance of reproducibility in AI research, emphasizing that clear experimental setups are crucial for validating model claims.
- Praise: The ability of Mythos to identify vulnerabilities without overly specific prompts suggests a significant advancement in AI's application to security tasks.
- Concern: Critics argue that the reproduction attempts lack transparency regarding the exact prompts used by Anthropic, raising concerns about the validity of the findings.
- Concern: There is skepticism about the claims made by Mythos, with some suggesting that the real advancements may stem from the harness rather than the model itself.