15 Replies Latest reply on Sep 12, 2013 3:38 PM by Adobevj007

    How can I make a more secure PDF?


      I normally use password protection on PDFs that I send to clients as proofs where I only allow lo-resolution printing. I recently became aware of "PDF Unlock" and similar services that can remove these passwords with very little effort, whether the password is weak or very strong. Is there any additional layer of protection I can add to my PDFs short of requiring a password to open the file - it seems these cracks have a harder time with that - or am I stuck relying on my clients' hopeful lack of knowledge that this is possible? Thank you.