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| Subject: | RE: [WEB SECURITY] Defeating CAPTCHA |
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| Date: | Thu, 25 Aug 2005 09:06:44 -0600 |
I suppose if the user had to select each letter and/or numeric digit from a captcha seperately, and enter these using a randomly generated input sequence by the server, that would block any programs from reading the CAPTCHA and feeding it directly to the form input field.
Eg. CAPTCHA: ZXCVBNM
Please enter the above CAPTCHA in the following sequence:
3rd letter: [ C ] 6th letter: [ N ] 5th letter: [ B ] 2nd letter: [ X ] 7th letter: [ M ] 4th letter: [ V ] 1st letter: [ Z ]
Or am I missing something?
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