Hendrik Meutzner, Viet Hung Nguyen, Thorsten Holz, Dorothea Kolossa. Using automatic speech recognition for attacking acoustic CAPTCHAs: the trade-off between usability and security. In Charles N. Payne Jr., Adam Hahn, Kevin R. B. Butler, Micah Sherr, editors, Proceedings of the 30th Annual Computer Security Applications Conference, ACSAC 2014, New Orleans, LA, USA, December 8-12, 2014. pages 276-285, ACM, 2014. [doi]
Abstract is missing.