%0 Conference Proceedings %T Turn the Combination Lock: Learnable Textual Backdoor Attacks via Word Substitution %A Qi, Fanchao %A Yao, Yuan %A Xu, Sophia %A Liu, Zhiyuan %A Sun, Maosong %Y Zong, Chengqing %Y Xia, Fei %Y Li, Wenjie %Y Navigli, Roberto %S Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) %D 2021 %8 August %I Association for Computational Linguistics %C Online %F qi-etal-2021-turn %R 10.18653/v1/2021.acl-long.377 %U https://aclanthology.org/2021.acl-long.377/ %U https://doi.org/10.18653/v1/2021.acl-long.377 %P 4873-4883