Use Pardot form handlers with Salesforce web-to-lead forms for campaign and source tracking with Pardot’s micro-level web analytics. The integration posts form data to both Salesforce and Pardot almost simultaneously.
Add a Honeypot Field to External Forms
A honeypot is a hidden field that is visible to bots but not humans. When a bot fills out a form, the bot sees the hidden field and fills it out. Pardot rejects submissions that contain a value in the honeypot field. You can add the honeypot field to your external forms that you have integrated with Pardot form handlers.
Example honeypot code:
<div style="position:absolute; left:-9999px; top: -9999px;">
<input type="text" id="pardot_extra_field" name="pardot_extra_field">