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Captcha Robustness: A Security Engineering Perspective

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2 Author(s)
Yan, J. ; Sch. of Comput. Sci., Newcastle Univ., Newcastle upon Tyne, UK ; El Ahmad, A.S.

Captchas are a standard defense on commercial websites against undesirable or malicious Internet bot programs, but widely deployed schemes can be broken with simple but novel attacks. Applying security engineering expertise to the design of Captchas can significantly improve their robustness.

Published in:

Computer  (Volume:44 ,  Issue: 2 )