If you want to password-protect your PDF documents from outside interference, then maybe you should give PDF Page Lock a test run. It is a free encryption software that lets you easily encrypt PDF ...

Want to encrypt your important PDF files? It's easier than you might think. Here's how to encrypt PDF files on your Mac or Windows PC.

If you have a confidential PDF you want to password protect, you have a few ways to do that on your Windows 11 PC. You can use a desktop app or a web-based tool to encrypt your PDF files.

Once set, click the Protect PDF button, and your document will be encrypted, ensuring that only those with the password can access it.

Advanced PDF Utilities & PDFill PDF Editor can be used to manage PDF tasks such as, split pages, merge, encrypt, edit, convert PDF files etc.

With a few steps you can set up an easy way to encrypt PDF files generated from the standard print dialog window.

PDF files, even with extra encryption, could be easily hacked, a team academics has found. The new attack, called PDFex, comes in two variations and in testing, it was successfully able to steal ...

How to encrypt and password-protect ZIP files the right way This tip was originally published on IDG Answers, a reader-powered help desk for answering tech questions.

This free online tool is great for converting and making simple changes to PDF files, but look elsewhere for serious annotation abilities.