Julius: Security tool identifies 60+ LLM services on network endpoints in seconds

tom_doerr · x · 2026-08-09

Security firm Praetorian has open-sourced Julius, an LLM service fingerprinting tool on GitHub. Designed for penetration testing and attack surface discovery, the tool can scan network endpoints to identify the AI server software running on them within seconds.

Unlike tools that identify which LLM generated a piece of text, Julius focuses on identifying the underlying server infrastructure. It currently supports detecting over 60 AI service software including Ollama, vLLM, and LiteLLM, helping security teams quickly spot unauthorized or exposed LLM deployments within corporate networks.

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