Captcha robustness: a security engineering perspective

Jeff Yan*, Ahmad Salah El Ahmad

*Corresponding author for this work

Research output: Contribution to specialist publicationArticle

28 Citations (Scopus)

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.

Original languageEnglish
Pages54-60
Number of pages7
Volume44
No.2
Specialist publicationComputer
DOIs
Publication statusPublished - 1 Feb 2011

Keywords

  • captchas
  • internet security
  • robustness
  • security engineering
  • segmentation
  • computer security
  • network security
  • access control

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