{"data":{"id":"ed16f04a-3f08-4838-8b5f-c8141ceb179d","title":"Claude's new system prompt really doesn't want to reproduce song lyrics","summary":"Anthropic updated Claude's system prompt (the set of instructions that guide how Claude behaves) to prevent reproducing song lyrics, poems, and copyrighted visual works like characters and logos. The update likely followed lawsuits from Sony Music Publishing and Warner Chappell over training on song lyrics databases, and Claude now declines such requests throughout a conversation and offers to analyze the work instead.","solution":"N/A -- no mitigation discussed in source.","labels":["safety"],"sourceUrl":"https://simonwillison.net/2026/Sep/2/claudes-new-system-prompt/","publishedAt":"2026-09-02T14:16:42.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Claude","Sony Music Publishing","Warner Chappell","OpenAI","Gemini"],"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":"2026-09-02T14:16:42.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["safety"],"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}