Solved
To prevent unauthorized sharing of your PDF forms, consider using VeryPDF DRM Protector, an affordable and user-friendly solution designed to ...
How to send a secure PDF: send documents securely
Launch Adobe Acrobat and select the Protect tool from the Tools menu. Choose your protection settings. You can restrict editing with a password or encrypt the entire PDF with a password or digital certificate. You can also erase hidden information from th
How to prevent PDF sharing without passwords
Lock PDF files to devices & locations, stop copying, editing & printing. Add dynamic watermarks, expire PDFs, track and revoke access. How to protect a PDF from... · How to make a PDF unshareable