@inproceedings{blue2022who,
  title={{Attacks as Defenses: Designing Robust Audio CAPTCHAs Using Attacks on
Automatic Speech Recognition Systems}},
  author={Abdullah, Hadi and Karleka, Aditya and Prasad, Saurabh and Rahman,
Muhammad Sajidur and Blue, Logan and Bauer, Luke A. and Bindschaelder, Vincent
and Traynor, Patrick},
  booktitle={NDSS},
  year={2023}
}