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Anti-Spam Tools
by Ivy on November 9, 2006

Luckily, Internet Storm Center and its Johannes Ullrich also had similar problems, and that lot solved the problem by employing the use of invisible form fields:
"one or more fake form fields are added to the form. But style sheets are used to make them "invisible". To further confuse the attacker, the fake form fields are given names like "subject" and such suggesting to the bot that these are the form fields they are looking for. However, whenever a form is submitted with content in a "hidden" field, it is discarded. I am not talking about the classic hidden form fields that are not user changeable, but form fields that are marked with "display: none"
Smart isn't it?
Internet Storm Center cut its response form spam to a bare minimum, so I think this would be a great solution for many blogs, websites and online shops.
Permalink: Stop form spam - When CAPTCHA is not enough
Trackback: http://publish.creative-weblogging.com/publish/mt-tb.pl/41983
Mr Wong
Vote for Stop form spam - When CAPTCHA is not enough:
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Rating: 7.44 out of 9 vote(s) cast.
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Response from:
Anthony
(01/29/08 3:32pm)
Response from:
Clips
(05/07/08 9:16am)
I have been reading up on several ways to prevent spambots from spamming web forms. I came up with a simple technique
Response from:
Mark
(05/28/08 4:12pm)
Be careful when selecting the names for fake fields. "Subject" might be ok, but "Name" will be populated by the AutoFill feature of the Google Toolbar if used and thus cause real entries to be blocked as SPAM.
Web Development by Innovative Technology Solutions, Inc.
http://www.innovativetechsolutions.net
Web Development by Innovative Technology Solutions, Inc.
http://www.innovativetechsolutions.net
Response from:
wagner
(09/10/08 8:12am)
Just added it to my site, let see how it goes, it is also good practice to have a form validation checking if telephone numbers are actual numbers, and email addresses are email addresses, but i personally don't like CHAPTCHA as it can cause frustration to the user.
Response from:
amittarin
(12/21/08 2:44pm)
need a chaptcha data entry job earn for money for breathI''ve no money .can u give me the work .i will paid u when u give me my selary i want a job for food for my child ,my morher my waif for my family plz help meI have no money no credit card
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..for an example.
So far it has worked
Anthony
http://www.atksolutions.com