To require Secured Sockets Layer (SSL) for web pages that could contain sensitive data such as credit card information, select Require for secure content in organization settings.
When you select this checkbox, the program uses “https” when you build URLs for web pages that contain a part that has secure content. These parts include the User Login, eCards, Donation Form, Membership Form, Event Registration Form, Fundraiser, Personal Page Manager, Form Display Formatted Text and Images (Secured), and Transaction Manager parts.