@inproceedings{zhang-etal-2026-attack,
    title = "How to Attack Stealthily? A Letter Frequency-based Backdoor Attack Against {LLM}s Bounded by Logit Fluctuation",
    author = "Zhang, Ruyi  and
      Jian, Songlei  and
      Tan, Yusong  and
      Gao, Heng  and
      Zhang, Jianfeng  and
      Zhou, Haifang",
    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.1292/",
    pages = "29425--29443",
    ISBN = "979-8-89176-459-0"
}