Comments on: CAPTCHA vs Human Logic http://www.tylercruz.com/captcha-vs-human-logic/ The journal of a young web entrepreneur on his journey to wealth. Wed, 08 Feb 2012 17:07:06 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Karl http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-28335 Karl Thu, 21 Oct 2010 18:44:26 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-28335 Hey, I'm a fan of logic captchas over image ones. While it's true nothing will be 100% effective, answering a simple logic question is a better experience for most users that deciphering an increasingly complex image. This looks liek a good service: http://textcaptcha.com/ I've also found a honeypot technique successful: http://haacked.com/archive/2007/09/11/honeypot-captcha.aspx Hey,

I’m a fan of logic captchas over image ones. While it’s true nothing will be 100% effective, answering a simple logic question is a better experience for most users that deciphering an increasingly complex image. This looks liek a good service:

http://textcaptcha.com/

I’ve also found a honeypot technique successful:
http://haacked.com/archive/2007/09/11/honeypot-captcha.aspx

]]> By: Mike http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-27043 Mike Tue, 14 Sep 2010 15:12:33 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-27043 ..and right there, my friends, we have the reason why all verification techniques will ultimately fall-- unscrupulous people who throw humans at the problem. ..and right there, my friends, we have the reason why all verification techniques will ultimately fall– unscrupulous people who throw humans at the problem.

]]> By: Amir Hossain http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-7851 Amir Hossain Tue, 25 Mar 2008 13:57:30 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-7851 Hi!!! Hope you are doing well. We the leading Data processing company in Bangladesh. Presently we are processing 300000+ captcha per day by our 55 operators. We have a well set up and We can give the law rate for the captcha solving. Our rate $2 per 1000 captcha. We just wanna make the relationship for long terms. can we go forward? Thank you, (For inquiry amir4@yours.com or khoknaa@yahoo.com) Best Regards Amir Hossain Dewan Data Home Ltd. amir4@yours.com khoknaa@yahoo.com Hi!!! Hope you are doing well. We the leading Data processing company in Bangladesh. Presently we are processing 300000+ captcha per day by our 55 operators. We have a well set up and We can give the law rate for the captcha solving.

Our rate $2 per 1000 captcha.

We just wanna make the relationship for long terms. can we go forward? Thank you, (For inquiry amir4@yours.com or
khoknaa@yahoo.com)

Best Regards
Amir Hossain Dewan
Data Home Ltd.
amir4@yours.com
khoknaa@yahoo.com

]]> By: TylerCruz.com: An Internet Entrepreneur’s Journey » MillionDollarWebTV.com Review http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-3911 TylerCruz.com: An Internet Entrepreneur’s Journey » MillionDollarWebTV.com Review Fri, 21 Sep 2007 04:19:59 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-3911 [...] just a personal preference/suggestion, but it’d be nice if they changed that to use a “Human Logic” question such as “What is the opposite of day?” or “What day comes after [...] [...] just a personal preference/suggestion, but it’d be nice if they changed that to use a “Human Logic” question such as “What is the opposite of day?” or “What day comes after [...]

]]> By: Nick Williams http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-1916 Nick Williams Mon, 16 Apr 2007 04:32:28 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-1916 The problem(s) with this is that the tests have to be come up with manually. Thus the CA part of CAPTCHA [completely automated] does not stand. There are a finite set of questions that can be asked, and bots can still come up with the answer to something as simple as arithmetic or basic trivia. You also have the gray line that's drawn between basic logic and advanced logic, the latter of which introduces regional conflict. As the commenter above me suggests, and I agree, it's all about circumstances. Websites like Blogger.com and Digg are best off with the more robust ubiquitous visual/audio letter/number CAPTCHA because it is most resistant to attack. However, spam bots in general are playing the numbers game... differentiating your blog/form from others simply by renaming a form field will prevent a lot of spam. That works in a situation (which I believe most common) where the form isn't necessarily a target on its own, instead it's a target because it's a known vulnerable form (such as a Wordpress blog). The problem(s) with this is that the tests have to be come up with manually. Thus the CA part of CAPTCHA [completely automated] does not stand. There are a finite set of questions that can be asked, and bots can still come up with the answer to something as simple as arithmetic or basic trivia. You also have the gray line that’s drawn between basic logic and advanced logic, the latter of which introduces regional conflict.

As the commenter above me suggests, and I agree, it’s all about circumstances. Websites like Blogger.com and Digg are best off with the more robust ubiquitous visual/audio letter/number CAPTCHA because it is most resistant to attack. However, spam bots in general are playing the numbers game… differentiating your blog/form from others simply by renaming a form field will prevent a lot of spam. That works in a situation (which I believe most common) where the form isn’t necessarily a target on its own, instead it’s a target because it’s a known vulnerable form (such as a WordPress blog).

]]> By: Matt http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-1834 Matt Sat, 14 Apr 2007 09:42:34 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-1834 What some of you are missing/forgetting/... is that CAPTCHA's are inaccessible to blind users. Even some fully sighted people have issues with CAPTCHA's. I agree that perhaps "What sound does a cow make?" might not be the best logic question, but it's more accessible than image CAPTCHA's. Is there a perfect solution? No. Will there ever be? No. It's all about what's going to work best for your circumstances, whether that be an image CAPTCHA, a logic CAPTCHA or some other form of spambot detection. What some of you are missing/forgetting/… is that CAPTCHA’s are inaccessible to blind users.

Even some fully sighted people have issues with CAPTCHA’s.

I agree that perhaps “What sound does a cow make?” might not be the best logic question, but it’s more accessible than image CAPTCHA’s.

Is there a perfect solution? No. Will there ever be? No.

It’s all about what’s going to work best for your circumstances, whether that be an image CAPTCHA, a logic CAPTCHA or some other form of spambot detection.

]]> By: TylerCruz.com - John Chow style Review Me for Linkback. | BlogBait.net http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-1365 TylerCruz.com - John Chow style Review Me for Linkback. | BlogBait.net Thu, 05 Apr 2007 22:19:21 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-1365 [...] a few articles about Internet related and blog related topics.  One great article I read was Captcha vs. Human Logic which is right on and the truth is so [...] [...] a few articles about Internet related and blog related topics.  One great article I read was Captcha vs. Human Logic which is right on and the truth is so [...]

]]> By: Paul http://www.tylercruz.com/captcha-vs-human-logic/comment-page-1/#comment-1045 Paul Sat, 31 Mar 2007 01:20:17 +0000 http://www.tylercruz.com/captcha-vs-human-logic/#comment-1045 Most blog spam bots are very stupid. I have done (non-scientific) experiments on them, looking for an effective way to reduce spam WITHOUT causing an additional hassle to the user. My experiments confirmed what I thought - most bots do not even read the form, so filling a hidden field with a secret is enough to stop them. The ones that do read the form don't execute javascript, so filling another field with javascript will stop them. I have created a wordpress plugin based on my findings, it can be found here: http://www.paulbutler.org/archives/preventing-comment-spam-with-javascript-bot-detection/ Most blog spam bots are very stupid. I have done (non-scientific) experiments on them, looking for an effective way to reduce spam WITHOUT causing an additional hassle to the user. My experiments confirmed what I thought – most bots do not even read the form, so filling a hidden field with a secret is enough to stop them. The ones that do read the form don’t execute javascript, so filling another field with javascript will stop them.

I have created a wordpress plugin based on my findings, it can be found here: http://www.paulbutler.org/archives/preventing-comment-spam-with-javascript-bot-detection/

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