Does RoboForm fall prey to Hidden Field attacks?

RoboForm will only fill in the fields that you originally saved for the Login. RoboForm will not fill in any additional fields unless you select it to do so. RoboForm also provides warning messages when sensitive fields (e.g. credit card info) have been filled. 

For additional security, you may turn off Autofill. By doing so, you ensure that data is only filled when you specifically choose for it to be filled. To modify these settings follow the steps below.

Select the RoboForm (taskbar) Icon >>Options >> uncheck the "Autofill On" box.