Poison Claude Sells Discounted Claude Access While Its Operator Sees Every Customer Prompt

Cybersecurity researchers have discovered more than half-a-dozen services advertisements for illegal access to artificial intelligence (AI) models on underground cybercrime forums and messaging platforms. One such service, Poison Claude, claims to offer access to Anthropic's large language models (LLMs), including Opus 4.8, Opus 4.7, Opus 4.6, and Sonnet 4.6. "Advertisements for Poison Claude

Reported facts: The article describes 'Poison Claude', a gray‑market service that resells discounted access to Anthropic-compatible Claude models using pools of fraudulently created cloud accounts and free credits, with the operator able to see every customer prompt and interaction.[1][2] This creates an untrusted intermediary in the AI access path, effectively turning user prompts and outputs into data the operator can log, inspect, or abuse.[1] RealGround analysis: This is an AI supply chain compromise risk—organizations using third‑party, non-official access services lose control over where prompts, credentials, and proprietary code or data are stored and who can observe them. Practically, security teams should ban shadow/gray‑market AI access, inventory all AI endpoints in use, and ensure only vetted, direct vendor APIs are used, supported by AI Supply Chain & SBOM Advisory to assess and harden AI access paths.