An Experimental Investigation of Text-based CAPTCHA Attacks and Their Robustness

Ping Wang, Haichang Gao, Xiaoyan Guo, Chenxuan Xiao, Fuqi Qi, Zheng Yan. An Experimental Investigation of Text-based CAPTCHA Attacks and Their Robustness. ACM Computing Surveys, 55(9), 2023. [doi]

Abstract

Abstract is missing.