@article{hasmysystempromptbeenusedlargelanguage,
  title = {Has My System Prompt Been Used? Large Language Model Prompt Membership Inference},
  author = {Roman Levin and Valeriia Cherepanova and Abhimanyu Hans and Avi Schwarzschild and Tom Goldstein},
  year = {2025},
  eprint = {2502.09974},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2502.09974v1},
}