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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
...CAPTCHAs, Im already starting to see evidence of consolidation between Indias major CAPTCHA solving companies. The consolidation logically leading to increased bargaining power, is resulting in an international franchising model recruiting data processing workers empowered with do-it-yourself CAPTCHA syndication web based kits, API keys, and...
 
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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You have to take your (white) hat off to these hackers.... and a lot else too!

2007-11-05 12:20:00 by Allen Baranov, CISSP in Security Thoughts
 
...Captchas are those weird little blocks with numbers and letters all jumbled up and fairly difficult to read. They are there to check whether the user is a human or a computer pretending to be a human. They essentially prevent hackers from automating things that server owners would prefer them not to automate An example is - when you sign up...
 
Tags: email account, free email account, prevent spammers, human, captchas, spammers, prevent hackers, blond lady, server owners
 
 
 
 
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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
...CAPTCHAs, has been an urban legend for over two years now, with do-it-yourself CAPTCHA breaking services, and proprietary underground tools assisting spammers, phishers and malware authors into registering hundreds of thousands of bogus accounts for spamming and fraudulent purposes. This post intends to make this official, by covering an...
 
Tags: captcha, hotmails captcha, captcha authentication, bogus accounts, accounts, text based captcha, accounts drops due, do-it-yourself captcha, yahoo
 
 
 
 
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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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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
...CAPTCHAs mentioned are those of Yahoo, Hotmail, QQ, Google. Moreover, Ticketmaster's the most expensive one, followed by Ebay's CAPTCHA decoding process What happens when malicious parties cannot directly decode the CAPTCHA? They figure out ways to adapt to the situation, namely by enjoying the benefits of the human factor in the process...
 
Tags: captcha, diy captcha breakers, malicious parties, service, web service basis, process, directly decode, future customers, decent level
 
 
 
 
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Is CAPTCHA a long term fix?

2008-02-08 08:51:23 by Editor in Adventures in Security
 
Although the purpose of CAPTCHAs is to prevent spammers and other malicious types from creating large numbers of email, social networking, or other accounts, the value of these accounts to the financial goals of many attackers encourages them to find ways around CATPCHA controls
 
Tags: catpcha controls, prevent spammers, malicious types, financial goals, attackers encourages, accounts, captchas, purpose, social
 
 
 
 
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Massive Blackhat SEO Targeting Blogspot

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2008-02-17 22:53:13 by HASH0x8ad5e0c in Dancho Danchev's Blog - Mind Streams of Information Security Knowledge
...CAPTCHAs But of Course It's a Pleasant Transaction Vladuz's EBay CAPTCHA Populator The Blogosphere and Splogs p0rn.gov - The Ongoing Blackhat SEO Operation
 
Tags: blogspot, blogspot accounts directly, entire operation, operation, content, blogs, sample blogs, firesearch, real-time content
 
 
 
 
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Rise in Gmail spam indicates more solved CAPTCHAs

2008-03-10 00:00:00 by HASH0x8b38594 in Network World on Security
 
Spam originating from Google's Gmail domain doubled last month, indicating that spammers are still defeating the CAPTCHA, the distorted text used as a security test to thwart mass registration of e-mail accounts and other Web site abuse
 
Tags: thwart mass registration, e-mail accounts, web site, spam, security test, gmail domain, google, month, captcha
 
 
 
 
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Spammers still defeating CAPTCHAS

2008-03-10 13:00:00 by Editor in Computerworld Security News
 
Spam originating from Google's Gmail domain doubled last month, indicating that spammers are still defeating the CAPTCHA security
 
Tags: captcha security, spammers, gmail domain, google, spam, month