{"data":{"id":"1250c95b-23c1-4769-9611-06f578037b82","title":"Claude Mythos FAQ: Capabilities, access, competitors, implications","summary":"Claude Mythos is an advanced AI model developed by Anthropic for cybersecurity and healthcare that can automatically discover zero-day vulnerabilities (previously unknown security flaws) at scale, including finding over 10,000 high-severity bugs in major operating systems and browsers. Anthropic restricts access to Mythos through Project Glasswing, a controlled program with vetted partners, and requires data retention monitoring because the model's powerful capabilities could be misused by attackers. For broader use, Anthropic offers Claude Fable 5, a safer version with guardrails (restrictions on risky operations) that automatically routes flagged cybersecurity queries to a less capable model instead.","solution":"N/A -- no mitigation discussed in source.","labels":["security","industry"],"sourceUrl":"https://www.csoonline.com/article/4198019/claude-mythos-faq-capabilities-access-competitors-implications.html","publishedAt":"2026-07-20T06:30:00.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic","OpenAI"],"affectedVendorsRaw":["Anthropic","Claude Mythos","Claude Fable","OpenAI","GPT-5.4-Cyber","GPT-5.5","Cisco"],"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":"2026-07-20T06:30:00.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity"],"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}