Poster: Captchæcker – Automating Usability-Security Evaluation of Textual CAPTCHAs
Maliha Nazir, Yousra Javed, Muhammad Murtaza Khan, Syed Ali Khayam, Shujun Li · Surrey Research Insight Open Access (The University of Surrey) · 2011
CAPTCHAs are now deployed ubiquitously on the Internet to combat automated malicious programs. A major problem with many deployed CAPTCHA schemes is that they are either too weak in terms of security or unacceptable in terms of usability.