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Posted by Christophe Fillot on March 8, 2006, 7:03 am
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csudaya wrote:
Hello,
> While disabling CSA, the software prompts for the user to type in a
> text which is shown in a blurred fashion to the user. This is to
> confirm that the users disabling it is doing it intentionally and also
> not through any programmatic means. This technique is also widely used
> while creating email a/c 's in yahoo and in several other places in the
> web.
>
> My question is , what is this technique known as ?
AFAIK, it is known as "captcha". You have some interesting examples
here : http://sam.zoy.org/pwntcha/
> How does the system
> ensure that the text shown in the box is shown in a form which is
> intelligble to the user ?
>
> Can anybody in the forum explain ?
>
> Thanks
> Udaya
>
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