Anthropic model weights allegedly exposed through a misconfigured AWS S3 bucket

Dark Web Informer says an actor calling themselves “localizer” claims to have retrieved a 7 GB shard of alleged “Claude Fable 5” weights from a misconfigured S3 bucket associated with Amazon Bedrock. The actor says access was then restricted and is offering the material for sale. The files’ authenticity and connection to Anthropic remain unverified. One commentator suspects the model is fake; another says even limited access would matter if the claim is true.