@inproceedings{geng-etal-2026-pisanitizer, title = "{PIS}anitizer: Preventing Prompt Injection to Long-Context {LLM}s via Prompt Sanitization", author = "Geng, Runpeng and Wang, Yanting and Yin, Chenlong and Cheng, Minhao and Chen, Ying and Jia, Jinyuan", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.942/", pages = "21706--21729", ISBN = "979-8-89176-459-0" }