How good are humans at solving CAPTCHAs? A large scale evaluation

Proceedings - IEEE Symposium on Security and Privacy

Volumn , Issue , 2010, Pages 399-413

  Bursztein, Elie ^a   Bethard, Steven ^a   Fabry, Celine ^a   Mitchell, John C ^a   Jurafsky, Dan ^a  

^a STANFORD UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CAPTCHAS; DEMOGRAPHIC TRENDS; NON-NATIVE SPEAKERS; REAL-WORLD;

INTERNET;

NETWORK SECURITY;

EID: 77955194191     PISSN: 10816011     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/SP.2010.31     Document Type: Conference Paper

References (27)

1. E. Athanasopoulos and S. Antonatos. Enhanced captchas: Using animation to tell humans and computers apart. In IFIP International Federation for Information Processing, 2006.
2. H.S. Baird and T. Riopka. Scattertype: a reading captcha resistant to segmentation attack. In IS & T/SPIE Document Recognition & Retrieval Conference, 2005.
3. Jeffrey P. Bigham and Anna C. Cavender. Evaluating existing audio captchas and an interface optimized for non-visual use. In ACM Conference on Human Factors in Computing Systems, 2009.
4. A. Caine and U. Hengartner. The AI Hardness of CAPTCHAs does not imply Robust Network Security, volume 238.
5. K. Chellapilla, K. Larson, P.Y Simard, and M. Czerwinski. Computers beat humans at single character recognition in reading based human interaction proofs (hips). In CEAS, 2005.
6. K Chellapilla and P Simard. Using machine learning to break visual human interaction proofs. In MIT Press, editor, Neural Information Processing Systems (NIPS), 2004.
7. M. Chew and H.S. Baird. Baffletext: a human interactive proof. In 10th SPIE/IS&T Doc. Recog. Retr. Conf DRR 2003, 2003.
8. Dancho Danchev. Microsoft's captcha successfully broken, blog post http://blogs.zdnet.com/security/?p=1232, May 2008.
9. R. Datta. Imagination: A robust image-based captcha generation system. In ACM Multimedia Conf., 2005.
10. Anne Eisenberg. New puzzles that tell humans from machines. http://www.nytimes.com/2009/05/24/business/ 24novelties.html?-r=l&ref= technology, May 2009.
11. J. Elson, J.R. Douceur, J. Howell, and J. Saul. Asirra: A captcha that exploits interest-aligned manual image categorization. In 4th ACM CCS, 2007.
12. P. Golle. Machine learning attacks against the asirra captcha. In ACM CCS 2008, 2008.
13. C. J. Hernandez-Castro and A.: Ribagorda. Pitfalls in captcha design and implementation: the math captcha, a case study. http://dx.doi.Org/10.1016/j. cose.2009.06.006, 2009.
14. C. J. Hernandez-Castro, A. Ribagorda, and Y. Saez. Sidechannel attack on labeling captchas. http://arxiv.org/abs/0908. 1185, 2009.
15. Terence M. Hines and Michael I. Posner. Slow but sure: A Chronometrie analysis of the process of aging. In The 84th Annual Convention of the American Psychological Association, 1976.
16. Sam Hocevar. Pwntcha captcha decoder, web site, http://sam. zoy.org/pwntcha.
17. M.E. Hoque, D.J. Russomanno, and M. Yeasin. 2d captchas from 3d models. In IEEE SoutheastCon 2006, 2006.
18. P Simard K Chellapilla, K Larson and M Czerwinski. Building segmentation based human- friendly human interaction proofs. In Springer-Verlag, editor, 2nd Int'l Workshop on Human Interaction Proofs, 2005.
19. P Simard K Chellapilla, K Larson and M Czerwinski. Designing human friendly human interaction proofs. In ACM, editor, CHI05, 2005.
20. G. Mori and J. Malik. Recognizing objects in adversarial clutter: Breaking a visual captcha. In CVPR 2003, pages 134-144, 2003.
21. G. Moy. Distortion estimation techniques in solving visual captchas. In CVPR 2004, 2004.
22. Moni Naor. Verification of a human in the loop or identification via the turing test. Available electronically: http://www. wisdom.weizmann.ac.il/-naor/ PAPERS/human.ps, 1997.
23. Simsa Tam, J., S. J., Hyde, and L. Von Ahn. Breaking audio captchas. http://www.captcha.net/Breaking-AudioCAPTCHAs.pdf.
24. L. von Ahn, M. Blum, N. J. Hopper, and J. Langford. Captcha: Using hard ai problems for security. In Sringer, editor, Eurocrypt, 2003.
25. J. Yan and A.S.E. Ahmad. Breaking visual captchas with naive pattern recognition algorithms. In ACSAC 2007, 2007.
26. Jeff Yan and Ahmad Salah El Ahmad. A low-cost attack on a microsoft captcha. Ex confidential draft http://homepages. cs.ncl.ac.uk/jeff.yan/msn- draft.pdf, 2008.
27. H. Yeen. Breaking captchas without using ocr. http://www. puremango.co.uk/2005/11/breaking-captcha-115/.