{"data":{"id":"dbdd5a50-1272-475a-94e0-023b32df0637","title":"Cybersecurity researchers aren’t happy about the guardrails on Anthropic’s Fable","summary":"Anthropic released Fable, a limited version of its cybersecurity AI model Mythos, with guardrails (safety restrictions) that block requests related to cybersecurity and biology topics to prevent misuse for creating malware or biological weapons. However, cybersecurity researchers complain the restrictions are overly broad and keyword-based, rejecting even legitimate tasks like code reviews and secure coding practices, though experts acknowledge this is an early-stage approach that may improve over time.","solution":"Anthropic offers a Cyber Verification Program that approved cybersecurity professionals can join to gain fewer limitations on using Claude for cybersecurity work. Additionally, the source notes that Fable is programmed to fall back to Claude Opus 4.8 when it hits a guardrail, allowing users to continue their work with a less restricted model version.","labels":["safety"],"sourceUrl":"https://techcrunch.com/2026/06/10/cybersecurity-researchers-arent-happy-about-the-guardrails-on-anthropics-fable/","publishedAt":"2026-06-10T15:41:22.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Claude","Fable","Mythos","OpenAI"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-06-10T15:41:22.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["safety"],"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null}}