That’s a pretty scary answer, to be honest.

Regardless, here’s the CaMeL paper. Defeating Prompt Injections by Design (2025): https://arxiv.org/abs/2503.18813

Here’s a paper offering a survey of different mitigation techniques, including CaMeL. Design Patterns for Securing LLM Agents against Prompt Injections (2025): https://arxiv.org/abs/2506.08837

And here’s a high-level overview of the state of prompt injection from 'simonw (who coined the term), which includes links to summaries of both papers above: https://simonwillison.net/2025/Jun/16/the-lethal-trifecta/