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Exposing Indias CAPTCHA Solving Economy

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2008-08-29 17:03:37 by Dancho Danchev in Dancho Danchev's Blog - Mind Streams of Information Security Knowledge
...CAPTCHA, and the question got answered by, well, a human, thousands of them to be precise. Speculations around one of the main weaknesses of CAPTCHA based authentication in the face of human CAPTCHA solvers, seems to have evolved into a booming economy in India during the past 12 months, with thousands of people involved The following...
 
Tags: captcha, microsofts captcha, indias major captcha, hotmails captcha, unbreakable captcha, human captcha solvers, human, inside indias captcha, captcha based authentication
 
 
 
 
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Gmail, Yahoo and Hotmails CAPTCHA Broken

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2008-07-03 08:36:21 by Dancho Danchev in Dancho Danchev's Blog - Mind Streams of Information Security Knowledge
...CAPTCHA authentication, and entirely another to build a business model on the top of it next to the opportunity to abuse if for your own malicious purposes. Which is exactly what we have here, an underground service that's selling registered accounts at Gmail, Yahoo, Hotmail and the most popular Russian email providers in the thousands. Once...
 
Tags: captcha, hotmails captcha, captcha authentication, bogus accounts, accounts, text based captcha, accounts drops due, do-it-yourself captcha, yahoo
 
 
 
 
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Which CAPTCHA Do You Want to Decode Today?

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2007-11-28 15:22:59 by HASH0x89f1f84 in Dancho Danchev's Blog - Mind Streams of Information Security Knowledge
...CAPTCHA , now that's of course in between commercializing your know-how. CAPTCHA breaking or decoding on demand has been a reality for a while , with malicious parties empowered by proprietary tools , publicly available DIY CAPTCHA breakers , or services like this one doing it on demand The following service is offering the possibility for...
 
Tags: captcha, diy captcha breakers, malicious parties, service, web service basis, process, directly decode, future customers, decent level
 
 
 
 
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The Unbreakable CAPTCHA

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2008-07-17 17:05:54 by Dancho Danchev in Dancho Danchev's Blog - Mind Streams of Information Security Knowledge
...CAPTCHAs of popular free email service providers in order to abuse their clean IP reputation, and already validated authenticity through the use of DomainKeys and SenderID frameworks , someone has finally came up with an unbreakable CAPTCHA If it only weren't a hoax, it would have even solved the human CAPTCHA solvers problem , whose...
 
Tags: captcha, ebay captcha populator, human captcha solvers, unbreakable captcha, diy captcha, spammers, captchas, senderid frameworks, solve
 
 
 
 
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New CAPTCHA Systems [HUMOR]

2007-11-26 08:48:00 by Security Retentive in Security Retentive
 
New grammar captcha system :) Quite funny if you ask me. Mostly a joke I suppose, but its Monday, so what the heck
 
Tags: grammar captcha system, heck, funny, joke, suppose, monday
 
 
 
 
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Breaking Google's audio CAPTCHA

2008-05-02 00:00:00 by HASH0x8b02020 in Network World on Security
 
Recent research is suggesting that Google's audio capture is the latest in a string of CAPTCHA's to have been defeated by software
 
Tags: audio capture, google, captcha, recent research, software
 
 
 
 
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How CAPTCHA got trashed

2008-07-16 00:00:00 by HASH0x8473438 in Network World on Security
 
CAPTCHA used to be an easy and useful way for Web administrators to authenticate users. Now it's an easy and useful way for malware authors and spammers to do their dirty work
 
Tags: easy, web administrators, malware authors, captcha, dirty, users, spammers
 
 
 
 
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Microsofts CAPTCHA Under Spammers Attack Again

2008-10-01 22:36:06 by CyberInsecure in CyberInsecure.com
 
Spammers and malware authors are once again attempting to break Microsofts CAPTCHA, and are able to sign up Live Hotmail accounts with a success rate of 10% to 15%, according to an assessment published by Websense. The DomainKeys verified server reputation is being abused in order to increase the probability of spam emails reaching the
 
Tags: microsofts captcha, live hotmail accounts, server reputation, spammers, spam emails, malware authors, websense, success, assessment
 
 
 
 
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Spam surges as Google's CAPTCHA falters

2008-11-03 05:00:00 by Editor in Computerworld Security News
 
The spread of CAPTCHA-cracking tools has resulted in a surge of blogging sites such as Google's Blogspot being used to host spam adverts, security vendor MessageLabs reports
 
Tags: host spam adverts, google, spread, sites, blogspot, tools, surge
 
 
 
 
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XRumer Spambot Cracks Captchas