Adobe's portable document format (PDF) has become a standard for exchanging and distributing documents. PDF files look like the original document would look if it were printed, and can be read on just ...

Cyber-attackers frequently trick users into opening PDF files containing malicious code. Once opened, the code triggers security flaws in Adobe Reader and Acrobat and compromises the victim's entire ...

You can digitally sign a PDF in several different ways, including Adobe Acrobat, Apple's Preview app, and mobile apps, among other options.