Alleged Anthropic "Claude Fable 5" weights leaked via misconfigured AWS S3 bucket

gaganghotra_ · x · 2026-10-31

Threat intel account Dark Web Informer reports that an actor dubbed "localizer" claims to have obtained a 7GB shard of Anthropic's alleged "Claude Fable 5" model weights from a misconfigured AWS S3 bucket tied to Amazon Bedrock. The full model allegedly spans 640 shards (8TB); the actor says only one shard was grabbed before access was cut, has published screenshots of a .safetensors file and hex dumps as proof, and is offering the material for sale. The claim is currently unverified.

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