Most people already know the basic checks before opening a file. They also apply to PDFs: verifying the sender looks legitimate, exercising caution before opening or downloading unexpected attachments ...

Gimp is normally used to create or manipulate images files, but can also work with PDFs if you understand how it works and what it's limits are. If you’ve never used Gimp—a free image editor available ...

Editing PDFs has never been easier ...

When somebody sends you a document as an attachment, don't just open it. Use the free tool Dangerzone to scrub it clean of any malevolent code. Here's how it works. You probably already know it's ...