PDFex can bypass encryption and password protection in most PDF readers and online validation services Researchers in Germany have invented a new hack that can allow someone to break the encryption of ...

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 ...

Update, July 22, 2025: This story, originally published on July 20, has been updated with an expert counterpoint to the idea that it’s the delivery mechanism being what’s important in the latest ...