Captcha Form Validation Image Security

[c258]

We are currently facing a problem with an autosubmitting program or programs that are filling out our contact request forms and filling our database with spam. Does anyone know a good script that we can use to cut down on this problem?

Thank you for your help

[JPnyc]

I'll check. Our forums have CAPCHA intrinsically but I'll look around and see if I can find a good independent script.

[JPnyc]

Well here's (http://www.puremango.co.uk/cm_php_captcha_script_113.php)a free one I found, but I can't vouch for it's quality because I haven't used it.

[Corey Bryant]

There are a lot out there. We developed our own using the csImage ASP component which ceased the spam. There is also Web Wiz CAPTCHA (http://www.webwizguide.com/asp/sample_scripts/web_wiz_CAPTCHA.asp) - not too sure if you were looking for an ASP solution

[aarong]

Hello,

I wrote a script for our Contact Us page that doesn't use CAPTCHA, but instead analyzes the contents of the form submission itself to see if it's malicious. I'd be willing to install it if it's something people are interested in.

This paper I wrote may also be helpful:

http://www.thinkcomputer.com/corporate/whitepapers/unabombersghost.pdf

Aaron

[Joseph James]

Hi all,
Is there any suggestion for asp.net solution on CAPTCHA?
Thanks in advance