While I appreciate the info that you have provided me with, you may have forgotten one main question from my original post unless I am extremely mistaken.
"But I'm curious if Facebook does scan their hosted files or if it would even be possible."
What I mean by this is that if Facebook scans files that are uploaded. Also, you may have misunderstood, but I mean a photo that is directly uploaded to Facebook. No external links or pictures, just directly shown in your news feed. I guess that summarized would mean they are hosted by Facebook.
Opening HTML or plain-text messages from unknown senders is just as dangerous as opening e-mail attachments from strangers. While most people may know not to open e-mail attachments, many don't realize that dangers can lie in the body of an e-mail as well. HTML e-mail or messages that contain embedded photos are just as dangerous. Embedded images and PDFs can contain malicious code that is harmful.
As for this, I am not referring to email or messages, only photos posted on news feed.
Also, may I ask how a plain-text message from an unknown sender would be dangerous?
After all, it is just a .txt file. As far as I knew, a .txt was completely unharmful. I guess it could be disguised as .exe or .bat
Please clarify on this.
I have seen Facebook viruses going around that contain external links, but I'm quite a computer safety focused individual (still in development ) and am wise enough not to click these.
Edited by Hermesx, 10 September 2013 - 08:33 PM.