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Decaptcha: Breaking 75% of eBay Audio CAPTCHAs
https://elie.net/static/files/decaptcha-breaking-75-percents-of-ebay-audio-captchas/decaptcha-breaking-75-percents-of-ebay-audio-captchas-paper.pdf
Surprisingly it turns out that the eBay captcha implementation is awed in several ways. Contribution. Our main contribution is the rst attack on the eBay audio captcha system that is able to break 75% of its audio captchas. To perform this attack we have: Built a scraper. We have developed a multi- threaded scraper to build our captcha corpus.
Decaptcha: Breaking 75% of eBay Audio CAPTCHAs
https://www.usenix.org/legacy/event/woot09/tech/full_papers/bursztein.pdf
called Decaptcha that is able to break 75% of eBay audio captchas. Combined with a medium sized IP pool, Decaptcha could register over 75,000 fake ac-counts on eBay per day. Outline The remainder of the paper is organized as fol-lows: In Sec.2we explain the general methodology for breaking captchas and present our threat model. In Sec
Decaptcha: breaking 75% of eBay audio CAPTCHAs
https://www.researchgate.net/publication/228952752_Decaptcha_breaking_75_of_eBay_audio_CAPTCHAs
In this paper we show that our prototype Decaptcha is able to success-fully break 75% of eBay audio captchas. We compare its performance with the state of the art, readily available speech...
Decaptcha breaking 75% of ebay audio captchas
https://elie.net/publication/decaptcha-breaking-75-percents-of-ebay-audio-captchas/
CAPTCHA tests aim at preventing attackers from performing automatic registration. In this paper we show that our prototype Decaptcha is able to successfully break 75% of eBay audio captchas. We compare its performance with the state of the art, readily available speech recognition system Sphinx and discuss the implications for eBay security.
Decaptcha: Breaking 75 % of eBay Audio CAPTCHAs
https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.160.2013
CAPTCHA tests aim at preventing attackers from performing automatic website registration. In this paper we show that our prototype Decaptcha is able to successfully break 75 % of eBay audio captchas. We compare its performance with the state of the art, readily available speech recognition system Sphinx and discuss the implications for eBay security. 1
Elie Bursztein Steven Bethard Stanford University
https://elie.net/static/files/decaptcha-breaking-75-percents-of-ebay-audio-captchas/decaptcha-breaking-75-percents-of-ebay-audio-captchas-slides.pdf
Breaking E-bay audio captcha d Computer Security Lab Elie Bursztein Steven Bethard Stanford University
Breaking audio CAPTCHAs - researchgate.net
https://www.researchgate.net/publication/221617978_Breaking_audio_CAPTCHAs
Bursztein et al. [8] developed an automated solver called Decaptcha that was able to break 75% of eBay audio CAPTCHAs. ... A Low-Cost Attack against the hCaptcha System Conference Paper
The Art of Breaking and Designing CAPTCHAS
https://elie.net/talk/the-art-of-breaking-and-designing-captchas/
Decaptcha breaking 75% of ebay audio captchas. Publication. How good are humans at solving captchas a large scale evaluation. ... Recaptcha and Ebay, and learn how to design secure CAPTCHAs. web security captcha hacking. Recent. Blog posts Publications Talks.
Breaking Audio CAPTCHAs - Carnegie Mellon University
https://www.cs.cmu.edu/~jdtam/Documents/Breaking_Audio_CAPTCHAs.pdf
In particular, we show that the audio CAPTCHAs used by sites such as Google and Digg are susceptible to machine learning attacks. Section 6 mentions the proposed design of a new more secure audio CAPTCHA based on our findings. 2 Literature review To break the audio CAPTCHAs, we derive features from the CAPTCHA audio and use
(PDF) A Low-Cost Attack against the hCaptcha System
https://www.researchgate.net/publication/350358315_A_Low-Cost_Attack_against_the_hCaptcha_System
Our automated CAPTCHA breaking system solves an. ... solver called Decaptcha that was able to break 75% of eBay. audio CAPTCHAs. In 2015, Sano et al. [33] developed ... ebay audio captchas.
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