A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is
Computer programs are misusing Internet services designed for humans. A CAPTCHA, Completely Automated Public Turing test to tell Computers and Humans Apart, is a standard security mechanism to defend against such attacks. Two fundamental issues with CAPTCHAs are usability and robustness. It is important for a CAPTCHA to be both legible for humans and strong against malicious computer programs. Recently, computer vision and pattern recognition algorithms have broken many well-known CAPTCHAs.dblp:journals/jwe/RoshanbinM13 fatcat:xy5pvkvnb5calkqu6ythkqiljy