Comments on: Captcha is useless

By: Mark

Mark — Mon, 09 Aug 2010 06:39:43 +0000

I’m not claiming I defeated bots. Bots can of course easily read off the images, that’s why I put some extra images in between. Hidden via CSS. If bots scan the code they will come across a lot more images than just the letters users see. If they use some kind of screenshot mechanism then my ‘captcha’ is indeed completely useless.

If people want to spam your site they will find a way to do it, wether you use a custom captcha or a generic one. I certainly do not advise my ‘captcha’ for a very popular, heavily visited website. Someone will write some custom code to post spam.

For me this implementation works great.

By: Chase

Chase — Sat, 07 Aug 2010 21:26:12 +0000

This method is completely useless, although it is easy to read… bots can easily read off the images. You changed it and it went to 0, because nobody has seen this method before. Most bots read off the internet cache, if anyone was to take a screenshot of the capcha, they would easily defeat it.

You cannot defeat the bots, as computer languages evolve.

By: Aewares

Aewares — Tue, 19 May 2009 09:53:34 +0000

testing.

By: Mark

Mark — Wed, 15 Apr 2009 05:39:37 +0000

Hi Ben,

I wasn’t aware that failed captcha’s turn up in the spam queue, it would make more sense to me that they aren’t stored at all.

As I just read the WordPress reCAPTCHA FAQ, it would make sense to disable Akismet when installing reCAPTCHA. I will try that and update my post.

Thanks for your comment.

Mark

By: Ben Maurer

Ben Maurer — Wed, 15 Apr 2009 00:16:55 +0000

Hi,

Please keep in mind that some spam bots cause a moderation email to get sent out when they fail the reCAPTCHA — http://wordpress.org/extend/plugins/wp-recaptcha/faq/ has more documentation about this.

- Ben