Small businesses working with sensitive PDF documents may choose to encrypt those documents. An encrypted PDF is password protected, which means you cannot open the document unless you type in the ...

The big picture: PDF encryption, as you can imagine, is commonly used in the world of business to protect trade secrets, confidential images and even health records. Some even send e-mail messages as ...

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 ...