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It is essential to secure your form against all ‘holes’ that those hackers are searching for.
There are programs known as ‘spam-bots’ that leech through the web pages looking for web forms.Detecting attempts to find these weaknesses is a critical protection mechanism.These definitions are used within this document: Ensure that data is not only validated, but business rule correct.The solution for this problem is to use a mechanism to identify human submitters from ‘bots’. If the word entered is wrong, the form submission is not processed.As CAPTCHA is a smartly blurred image, the spam bot can’t read it. Here is the HTML code for the contact form: tag for the CAPTCHA image points to the script captcha_code_
Business rules are known during design, and they influence implementation.