captcha

captcha

Can we implement this Captcha in siebel

Convert captcha generator from PHP4 to PHP5

What is your favourite captcha script? [closed]

Captcha script for PHP 4.3.X

"CAPTCHA" - making a version that is easier

Can't use captcha from tomahawk library

Alternative Captcha Like Services

How usable and secure is Confident CAPTCHA? Are there other options?

security issue with MSCAPTCHA

reCAPTCHA: why can't I check the same result twice?

Can Googlebot bypass validation for reCAPTCHA? [closed]

FB.ui with method 'feed' is resulting in an 'unknown error' and CAPTCHA request

Recaptcha - need only one word

reCAPTCHA vs other captcha systems

Automate Google Account Creation

Captcha's + Differnet Possibilities

jmeter testcases which can handle captcha?

jCaptcha - Refresh only image not whole page

gd library - font size?

Captcha with $, #, £, €, &, % characters?

Is there a way to set up PHPBB3 to use a CAPTCHA for every post?

Captcha image and raw format

Checkbox as alternative to captcha?

Recaptcha returning "The reCAPTCHA server is unavailable"

Are captchas need for my online form

Stop spam without captcha

How to put ReCaptcha in a popup?

Need suggestions/ideas for easy-to-use but secure captchas [closed]

reCAPTCHA accepting one word out of two

A captcha and forced registration still isn't stopping robot spam

Negative Captchas - help me understand spam bots better

reCAPTCHA or anti-spam filters?

Breaking a simple Captcha [closed]

Captcha Alternative, how secure?

Can you run your own reCaptcha service, in your own web app?

Is a captcha enough to enforce multiple failed login attempts? [closed]

should we use a captcha for Sign Up?

invisible captcha

prevent bruteforcing of captcha

How to Verify whether a Robot is Entering Information

Another answer to the CAPTCHA problem? [closed]

What is a good invisible captcha? [closed]

Implementing CAPTCHA after 50% of Article

Harder, Better, Faster, Stronger... Techniques for an image-based CAPTCHA?

Most effective form of CAPTCHA?

Are you human? (or How to prevent spam) [closed]

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