--- format: "aidr-story-markdown/v1" id: "6dd3d03dd67633ce66e01d968082fd4f551084a9e294fe5205133a0c0520914e" canonical_url: "https://aidr.today/6dd3d03d?lang=en" title: "Anthropic Says Sensitive AI Model Weights Were Not Accessed in Internal Breach" lang: "en" requested_lang: "en" available_langs: ["en","vi"] translation_fallback: null fallback_fields: [] published_at: "2026-10-26T22:52:34.000Z" category: "Industry" topics: ["anthropic","safety","llm"] source_urls: ["https://marketbrief.now/cybersecurity/anthropic-says-sensitive-ai-model-weights-were-not-accessed-in-internal-5fd90e6f","https://x.com/lizzadwoskin/status/2114646230764851695","https://x.com/choblin29/status/2114752816317411702","https://x.com/GerritD/status/2114732991645892616","https://x.com/logangraham/status/2114849047953670635","https://x.com/niubi/status/2114680504897150980","https://x.com/ZackKorman/status/2114675594474786828","https://x.com/FrancoisChauba1/status/2114790651011400088"] summary: "Anthropic confirmed that sensitive AI model weights, source code, and user conversations were not accessed during a recent internal network breach, which it said took researchers from Cathedral several days to exploit." --- # Anthropic Says Sensitive AI Model Weights Were Not Accessed in Internal Breach > [Open the canonical story]() **Published:** 2026-10-26T22:52:34.000Z **Category:** Industry **Topics:** anthropic, safety, llm ## Summary Anthropic confirmed that sensitive AI model weights, source code, and user conversations were not accessed during a recent internal network breach, which it said took researchers from Cathedral several days to exploit\. ## Sources - [Story source]() - [Story source]() - [Supporting source]() - [Supporting source]() - [Supporting source]() - [Supporting source]() - [Supporting source]() - [Supporting source]()