AnthropicのFable、安全性が高すぎてセキュリティブログも読めない
Anthropicの新モデルFableは、マルウェアを防ぐため、コードレビューのような無害なセキュリティ作業までブロックしており、ガードレールが過剰に厳しいと不満を募らせる研究者を困惑させている。
anthropic launched fable, a limited public variant of its mythos cybersecurity model, featuring aggressive guardrails that block any input tangentially related to cybersecurity or biology. researchers, including ibm's valentina palmiotti, note the model refuses innocuous requests like code reviews or reading blogs, often defaulting to the less capable claude opus 4.8 as a fallback. the restrictions are designed to prevent the development of malware and biological weapons, addressing Anthropic's core safety concerns. however, the broad, keyword-based filtering frustrates cybersecurity professionals who cannot use the tool for defensive engineering, highlighting the difficulty in balancing open safety against utility for legitimate researchers.