I post Secured PDF on our website. These PDFs should not be able to print. When I use other browsers I am not able to print the PDF, but on Firefox I am able to print. I was even able to print to PDF. This is a security issue. How can this be resolved?

In Firefox it's under the preference pdfjs.enablePermissions which defaults to false. You can switch it to true in about:config to enable restrictions.

Hi TyDraniu. Thank you for the information. I just have one questions for now, when I make the switch, this would only be applied to my computer, or can it change the settings for anyone who sees that PDF in firefox?

It's only for you.

Enterprises managing Firefox with use of policy templates can also configure their all Firefox instances with a dedicated policy.

Hi Juli, unlike a password to open a PDF, the copy/print/etc. permissions are on the honor system. It may be impossible to completely prevent printing by determined users, but to exercise more control, you can host your own PDF viewer customized to your needs. You've probably noticed these on other sites, and the basic code of the viewer built into Firefox can be installed on your site and run as a web application: https://github.com/mozilla/pdf.js/wiki/Setup-pdf.js-in-a-website