The robustness of a new CAPTCHA

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

Published

Standard

The robustness of a new CAPTCHA. / El, Ahmad Salah; Yan, Jeff; Marshall, Lindsay.
Proceedings of the 3rd European Workshop on System Security, EUROSEC'10. New York: ACM, 2010. p. 36-41.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

Harvard

El, AS, Yan, J & Marshall, L 2010, The robustness of a new CAPTCHA. in Proceedings of the 3rd European Workshop on System Security, EUROSEC'10. ACM, New York, pp. 36-41, 3rd European Workshop on System Security, EUROSEC'10, Paris, France, 13/04/10. https://doi.org/10.1145/1752046.1752052

APA

El, A. S., Yan, J., & Marshall, L. (2010). The robustness of a new CAPTCHA. In Proceedings of the 3rd European Workshop on System Security, EUROSEC'10 (pp. 36-41). ACM. https://doi.org/10.1145/1752046.1752052

Vancouver

El AS, Yan J, Marshall L. The robustness of a new CAPTCHA. In Proceedings of the 3rd European Workshop on System Security, EUROSEC'10. New York: ACM. 2010. p. 36-41 doi: 10.1145/1752046.1752052

Author

El, Ahmad Salah ; Yan, Jeff ; Marshall, Lindsay. / The robustness of a new CAPTCHA. Proceedings of the 3rd European Workshop on System Security, EUROSEC'10. New York : ACM, 2010. pp. 36-41

Bibtex

@inproceedings{5a0c605b8dba45d3abdf5ecc06ad8764,

title = "The robustness of a new CAPTCHA",

abstract = "CAPTCHA is a standard security technology that presents tests to tell computers and humans apart. In this paper, we examine the security of a new CAPTCHA that was deployed until very recently by Megaupload, a leading online storage and delivery website. The security of this scheme relies on a novel segmentation resistance mechanism. However, we show that this CAPTCHA can be segmented using a simple but new automated attack with a success rate of 78%. It takes about 120 ms on average to segment each challenge on a standard desktop computer.",

keywords = "CAPTCHA, Gestalt perception, Robustness, Segmentation attack",

author = "El, {Ahmad Salah} and Jeff Yan and Lindsay Marshall",

year = "2010",

doi = "10.1145/1752046.1752052",

language = "English",

isbn = "9781450300599",

pages = "36--41",

booktitle = "Proceedings of the 3rd European Workshop on System Security, EUROSEC'10",

publisher = "ACM",

note = "3rd European Workshop on System Security, EUROSEC'10 ; Conference date: 13-04-2010 Through 13-04-2010",

}

RIS

TY - GEN

T1 - The robustness of a new CAPTCHA

AU - El, Ahmad Salah

AU - Yan, Jeff

AU - Marshall, Lindsay

PY - 2010

Y1 - 2010

N2 - CAPTCHA is a standard security technology that presents tests to tell computers and humans apart. In this paper, we examine the security of a new CAPTCHA that was deployed until very recently by Megaupload, a leading online storage and delivery website. The security of this scheme relies on a novel segmentation resistance mechanism. However, we show that this CAPTCHA can be segmented using a simple but new automated attack with a success rate of 78%. It takes about 120 ms on average to segment each challenge on a standard desktop computer.

AB - CAPTCHA is a standard security technology that presents tests to tell computers and humans apart. In this paper, we examine the security of a new CAPTCHA that was deployed until very recently by Megaupload, a leading online storage and delivery website. The security of this scheme relies on a novel segmentation resistance mechanism. However, we show that this CAPTCHA can be segmented using a simple but new automated attack with a success rate of 78%. It takes about 120 ms on average to segment each challenge on a standard desktop computer.

KW - CAPTCHA

KW - Gestalt perception

KW - Robustness

KW - Segmentation attack

U2 - 10.1145/1752046.1752052

DO - 10.1145/1752046.1752052

M3 - Conference contribution/Paper

AN - SCOPUS:77952349364

SN - 9781450300599

SP - 36

EP - 41

BT - Proceedings of the 3rd European Workshop on System Security, EUROSEC'10

PB - ACM

CY - New York

T2 - 3rd European Workshop on System Security, EUROSEC'10

Y2 - 13 April 2010 through 13 April 2010

ER -

Research

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