Researchers have developed a new technique that allows attackers to extract contents of a password-protected or encrypted PDF file under special conditions. In a paper — titled “Practical Decryption ...

Adobe's PDF format allows you to combine text and images into portable document files which are easy to share with employees, print or store for later use. As the creator of a PDF file, you can ...

A recommended approach to secure your most private documents — whether it’s a PDF, Word file, or Excel spreadsheet — is to lock them with a passcode. While this does help keep sensitive content safe, ...