I was just reading an article from a link on Facebook and suddenly got a big window labelled "Urgent Chrome Update". There was a "chrome-update.bat" file downloaded. I immediately shut down my computer, restarted it and did a malware scan, found nothing, but when I did a Google search I found that the file will install malware that encrypts all the data on your computer. So BEWARE if this happens to you.
Here is what the fake warning window looks like.
See information HERE