The criteria are often captured within a form using text input fields, drop-down menus, check boxes, or radio buttons.

The potential impact of form spoofing, really, is that if you have a form that has drop-down boxes, radio buttons, checkboxes, or other limited input, those limits mean nothing if the form is spoofed.

Think about it: If you have a drop-down box or a radio button that limits the user to a certain amount of input, you may be tempted not to worry about validating the input.