Using machine learning to identify common flaws in CAPTCHA design: FunCAPTCHA case analysis

Carlos Javier Hernández Castro, María D. R.-Moreno, David F. Barrero, Stuart Gibson. Using machine learning to identify common flaws in CAPTCHA design: FunCAPTCHA case analysis. Computers & Security, 70:744-756, 2017. [doi]

Abstract

Abstract is missing.