@inproceedings{chen2021badnl,
  title={BadNL: Backdoor Attacks against NLP Models with Semantic-preserving Improvements},
  author={Chen, Xiaoyi and Salem, Ahmed and Chen, Dingfan and Backes, Michael and Ma, Shiqing and Shen, Qingni and Wu, Zhonghai and Zhang, Yang},
  booktitle={Annual Computer Security Applications Conference (ACSAC)},
  pages={554--569},
  year={2021}
}