{"data":{"id":"6d52e4a0-2ba8-4299-b569-ac40f52e3612","title":"Anthropic Users Hit by Infostealer Attacks, Session Thefts","summary":"A threat actor used infostealers (malware that secretly collects sensitive data like login credentials and session tokens from a user's device) to steal session information and gain unauthorized access to Claude accounts belonging to multiple Anthropic users. The exact number of affected users is unknown.","solution":"N/A -- no mitigation discussed in source.","labels":["security","privacy"],"sourceUrl":"https://www.darkreading.com/cyberattacks-data-breaches/anthropic-users-infostealer-attacks-session-thefts","publishedAt":"2026-08-31T21:08:46.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["pii_leakage"],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Claude"],"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":"2026-08-31T21:08:46.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality"],"aiComponentTargeted":"api","llmSpecific":true,"classifierConfidence":0.92,"researchCategory":null,"atlasIds":null}}