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"Security and Usability Challenges of Moving-Object CAPTCHAs: Decoding ..."
Yi Xu et al. (2012)
- Yi Xu, Gerardo Reynaga, Sonia Chiasson, Jan-Michael Frahm, Fabian Monrose, Paul C. van Oorschot:
Security and Usability Challenges of Moving-Object CAPTCHAs: Decoding Codewords in Motion. USENIX Security Symposium 2012: 49-64
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