Breaking Text CAPTCHA by Repeated Information

Jae Hyeon Woo; Moosung Park; Kyungho Lee

doi:10.1007/978-3-319-93563-8_11

Breaking Text CAPTCHA by Repeated Information

Jae Hyeon Woo, Moosung Park, Kyungho Lee

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

CAPTCHA is a simple challenge-response tool to determine whether the user is a bot or human. The user must answer required text, calculate questions, or choose some images from the provider’s choice. D portal site, which is one of the most famous web portal site in Korea, asks text response in CAPTCHA image when joining a cafe group, but this CAPTCHA is structured in a very regular format which can be read very simply if used repeatedly. We can read the text characters by bot with very high accuracy through some easy steps, among 2,000 sample CAPTHCAs.

Original language	English
Title of host publication	Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers
Editors	Brent ByungHoon Kang, Taesoo Kim
Publisher	Springer Verlag
Pages	127-136
Number of pages	10
ISBN (Print)	9783319935621
DOIs	https://doi.org/10.1007/978-3-319-93563-8_11
Publication status	Published - 2018
Event	18th World International Conference on Information Security and Application, WISA 2017 - Jeju Island, Korea, Republic of Duration: 2017 Aug 24 → 2017 Aug 26

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	10763 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	18th World International Conference on Information Security and Application, WISA 2017
Country/Territory	Korea, Republic of
City	Jeju Island
Period	17/8/24 → 17/8/26

Bibliographical note

Funding Information:
Acknowledgments. This work was supported by Defense Acquisition Program Administration and Agency for Defense Development under the contract (UD060048AD).

Keywords

Analysis
Attack
Bot
Break
CAPTCHA
Portal
Text

ASJC Scopus subject areas

Theoretical Computer Science
General Computer Science

Access to Document

10.1007/978-3-319-93563-8_11

Cite this

Woo, J. H., Park, M., & Lee, K. (2018). Breaking Text CAPTCHA by Repeated Information. In B. B. Kang, & T. Kim (Eds.), Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers (pp. 127-136). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 10763 LNCS). Springer Verlag. https://doi.org/10.1007/978-3-319-93563-8_11

Breaking Text CAPTCHA by Repeated Information. / Woo, Jae Hyeon; Park, Moosung; Lee, Kyungho.
Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers. ed. / Brent ByungHoon Kang; Taesoo Kim. Springer Verlag, 2018. p. 127-136 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 10763 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Woo, JH, Park, M & Lee, K 2018, Breaking Text CAPTCHA by Repeated Information. in BB Kang & T Kim (eds), Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 10763 LNCS, Springer Verlag, pp. 127-136, 18th World International Conference on Information Security and Application, WISA 2017, Jeju Island, Korea, Republic of, 17/8/24. https://doi.org/10.1007/978-3-319-93563-8_11

Woo JH, Park M, Lee K. Breaking Text CAPTCHA by Repeated Information. In Kang BB, Kim T, editors, Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers. Springer Verlag. 2018. p. 127-136. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). doi: 10.1007/978-3-319-93563-8_11

Woo, Jae Hyeon ; Park, Moosung ; Lee, Kyungho. / Breaking Text CAPTCHA by Repeated Information. Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers. editor / Brent ByungHoon Kang ; Taesoo Kim. Springer Verlag, 2018. pp. 127-136 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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Breaking Text CAPTCHA by Repeated Information

Abstract

Publication series

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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