Operationalizing CaMeL: Strengthening LLM Defenses for Enterprise Deployment

CaMeL (Capabilities for Machine Learning) introduces a capability-based sandbox to mitigate prompt injection attacks in large language model (LLM) agents. While effective, CaMeL assumes a trusted user prompt, omits side-channel concerns, and incurs performance tradeoffs due to its dual-LLM design. This response identifies these issues and proposes engineering improvements to expand CaMeL's threat coverage and operational usability. We introduce: (1) prompt screening for initial inputs, (2) output auditing to detect instruction leakage, (3) a tiered-risk access model to balance usability and control, and (4) a verified intermediate language for formal guarantees. Together, these upgrades align CaMeL with best practices in enterprise security and support scalable deployment.

@article{tallam2025_2505.22852,
  title={ Operationalizing CaMeL: Strengthening LLM Defenses for Enterprise Deployment },
  author={ Krti Tallam and Emma Miller },
  journal={arXiv preprint arXiv:2505.22852},
  year={ 2025 }
}