A nasty piece of malware is going around that pretends to be a Google Doc link, maybe from someone you know.

To protect yourself, don’t click on Google Doc links you weren’t expecting to receive. Often, these links are sent by people you know.

Here’s an example I received this afternoon. Several of my colleagues have received identical emails.

Apparently, if you were to click on the “Open in Docs” link, it would send a similar email to your entire inbox, according to BuzzFeed’s Joe Bernstein.

The malware seems to be pretty sophisticated.

Google hasn’t yet responded to a request for comment. In the meantime, if the sender is someone you know, check with them outside of Gmail before you open anything to ensure they shared a Google Doc with you.