Hello! A few minutes ago I noticed this on my side bar: It wasn't there before and I'm sure I definitely didn't activate anything. When I right click on it I just see "Open, Get Info, Open Sidebar Preferences". "Get info" doesn't have anything more than this: I certainly cannot turn off this "user" unless I pull the internet cable... IT just appears again when I connect. I'm really panicking right now, because there's absolutely nobody else who can help me with this around me. If this is any help; another family member is using the same connection in another room via cable as well but for over 2 years something like this never happened and we never had a problem, so I doubt this would appear now. Can somebody please help me? What is this? How can I get rid of this? I have no info, please?