Email is part of everyday life, both at work and at home. One minute you’re opening a message from a family member with a recipe, and the next you’re reviewing a file that looks like it came from your boss or a client. The problem? Not every email is what it seems.

Cybercriminals know we trust familiar names. That’s why they often disguise malicious emails, so they appear to come from someone you know. Their goal is simple:  get you to open an unsafe attachment, click too quickly, and let your guard down. Two of the most common file types used in these attacks are DOC files and PDFs.

Why DOC Files Can Be Risky

Older Microsoft Word DOC files are often used in attacks because they can contain macros. A macro is a set of automated commands that can run actions inside a file. If a scammer sends a fake DOC attachment and convinces you to enable macros, that file could install malware on your computer. These emails often create urgency, so you act before you think. DON’T!

DOCX is generally the safer choice because, right out of the box, it doesn’t run built-in, executable macros but rather a modern, zipped, XML-based format that’s easier to inspect and protect.

Why PDFs Aren’t Always Harmless

PDFs may look safe, but they can still be used in clever scams. A common trick is placing a fake image inside the PDF, something that looks like a video thumbnail or play button. Click it, and you may be sent to a dangerous website designed to steal passwords or other sensitive information. We repeat, DON’T!

Be Vigilant and Safe

If an email seems even a little suspicious, even if it appears to come from someone you know, pause and verify it by phone or in person. Be cautious with older DOC files, and whenever possible, use DOCX instead. Most importantly, think before you click. A few extra seconds of caution can save you from a major headache.

Want to learn more about how to keep your mailbox safe? Click here.