Anthropic has re-deployed Fable 5 and used the moment to publish two things that matter: a precise breakdown of what their cybersecurity classifiers will and won't block, and an early draft of a Cyber Jailbreak Severity (CJS) scale — a framework for rating how dangerous a given jailbreak actually is. Neither of these is just documentation. They're an attempt to set industry standards. What the classifiers actually block Fable 5's cyber classifiers sort requests into four bucke...