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Title: Authentication using image CAPTCHA
Page Link: Authentication using image CAPTCHA -
Posted By: seminar presentation
Created at: Friday 28th of May 2010 11:17:17 PM
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CAPTCHA is a technique used to identify wether the user is a human or a BOT(called web robots), and it allows the humans to authenticate themselves by answering some simple questions.

while many techniques are used in captcha like text captcha , photo captcha, sound captcha etc; many of them were easily broken by spammers.like text captcha is a distorted image of containing some abnormal text, and with the help of OCR(Optical Character Reader) we could easily break the text captcha...

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Title: ieee paper audio captcha existing solutions assessment and a new implementation for voip telephony
Page Link: ieee paper audio captcha existing solutions assessment and a new implementation for voip telephony -
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Created at: Monday 21st of January 2013 12:54:24 PM
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Title: captcha ppt and research paper both
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Created at: Thursday 09th of May 2013 10:37:38 PM
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Title: ieee base paper for captcha security for phishing secure or not
Page Link: ieee base paper for captcha security for phishing secure or not -
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Created at: Monday 15th of October 2012 06:27:34 PM
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Title: CAPTCHA Security A Low-Cost Attack on a Microsoft CAPTCHA
Page Link: CAPTCHA Security A Low-Cost Attack on a Microsoft CAPTCHA -
Posted By: Wifi
Created at: Monday 01st of November 2010 12:20:26 AM
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CAPTCHA Security: A Low-Cost Attack on a Microsoft CAPTCHA
SEMINAR REPORT
Submitted by
NARAYANAN V
DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
COLLEGE OF ENGINEERING TRIVANDRUM
2010






ABSTRACT


CAPTCHA is now almost a standard security technology. The most widely used CAPTCHAs rely on the sophisticated distortion of text images rendering them unrecognizable to the state of the art of pattern recognition techniques, and these text-based schemes have found widespr ....etc

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Title: 3D CAPTCHA
Page Link: 3D CAPTCHA -
Posted By: Anushekar
Created at: Sunday 27th of March 2011 11:03:06 PM
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Hii, i'm final sem BE student... I have to do technical seminar shortly
if anyone know more about or already have project or seminar on 3D captchs..pls send me.. it's urgent & i'm waiting... thanking you ....etc

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Title: An Alternative To Captcha - Video Captcha
Page Link: An Alternative To Captcha - Video Captcha -
Posted By: summer project pal
Created at: Monday 24th of January 2011 12:21:59 AM
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An Alternative To Captcha - Video Captcha
B.Tech Seminar report
by
Nawas Abdulla
Department of Computer Science And Engineering
Government Engineering College, Thrissur
December 2010

report:


Abstract
Video Captcha is a new technique for using content based video as a CAPTCHA
task. These CAPTCHAs are presently generated from YouTube videos, which con-
tains tags supplied by the person while uploading that video. These videos are graded
using the given video ....etc

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Title: 3D CAPTCHA A Next Generation of the CAPTCHA
Page Link: 3D CAPTCHA A Next Generation of the CAPTCHA -
Posted By: anushasekar2005
Created at: Monday 21st of March 2011 11:50:19 PM
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Hi,
I am Anusha Sekar. I am in my final year of Computer Science Engineering.
I want to know if you have ppt presentation fro the topic- 3D CAPTCHA: A Next Generation of the CAPTCHA. Could you help me out with the presentation? If you already have the presentation, please mail me at [email protected].

Thank You ....etc

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Title: CAPTCHA Using Hard AI Problems For Security full report
Page Link: CAPTCHA Using Hard AI Problems For Security full report -
Posted By: project topics
Created at: Wednesday 21st of April 2010 12:12:57 AM
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Abstract.
We introduce captcha, an automated test that humans can pass, but current computer programs canâ„¢t pass: any program that has high success over a captcha can be used to solve an unsolved Arti?- cial Intelligence (AI) problem. We provide several novel constructions of captchas. Since captchas have many applications in practical secu- rity, our approach introduces a new class of hard problems that can be exploited for security purposes. Much like research in cryptography has had a positive impact on algorithms for factoring and ....etc

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Title: Captcha
Page Link: Captcha -
Posted By: sharanps
Created at: Sunday 14th of March 2010 11:39:20 PM
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