Re: Re: My own "captcha" from 2 years ago......

From: Date: Mon, 26 Mar 2007 19:53:12 +0000
Subject: Re: Re: My own "captcha" from 2 years ago......
Groups: php.general 
Request: Send a blank email to php-general+get-251406@lists.php.net to get a copy of this message
If the code is embedded in the audio filename, or as part of the HTML, the CAPTCHA itself is kinda useless to a serious attack. The attacker will simply read the code from the HTML/URL You need the secret code to never actually leave your server for it to stay secret. That said, CAPTCHA can usually be broken by OCR by a serious attacker, though that takes a little longer than simply reading the code from HTML. Presumably somebody somewhere could (or already has) hook up voice recognition to an audio CAPTCHA and defeat that as well. -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some indie artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So?

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