Vu Duc Nguyen, Yang-Wai Chow, Willy Susilo. Breaking an Animated CAPTCHA Scheme. In Feng Bao, Pierangela Samarati, Jianying Zhou, editors, Applied Cryptography and Network Security - 10th International Conference, ACNS 2012, Singapore, June 26-29, 2012. Proceedings. Volume 7341 of Lecture Notes in Computer Science, pages 12-29, Springer, 2012. [doi]
Abstract is missing.