Title :
Captcha Robustness: A Security Engineering Perspective
Author :
Yan, Jeff ; El Ahmad, Ahmad Salah
Author_Institution :
Sch. of Comput. Sci., Newcastle Univ., Newcastle upon Tyne, UK
Abstract :
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.
Keywords :
Internet; Web sites; security of data; Captcha robustness; commercial Websites; malicious Internet bot programs; security engineering perspective; Captchas; Internet security; Robustness; Security engineering; Segmentation;
DOI :
10.1109/MC.2010.275
