Password Protect tables in LiveCycle

I have an interactive form that remote users can enter data and send back via adobe reader.

However, some users have LiveCycle and are going into tables within the form I created and published and adding their own data. When we go to upload to our systems centrally, it aborts.

Is there a way to protect my form fields (tables, etc) actually having their data altered, yet still allow users to pick data from the form to submit back to us.

Thank you for any ideas.