Does anyone else have physical access to your Mac? Is it possible someone tried to connect to your home network with another computer?
To get rid of this link, you can try going into System Preferences, Users & Groups, and check "Login Items" and see if this computer is listed there. That doesn't solve how this happened though.
The computer you see is just another device on the same wifi network. It's nothing to worry about.
True, but we know nothing about his network.The only reason to worry is if OP doesn't have any other devices on the network. That would suggest OP's got a freeloader on the home wifi.
My wireless (non-Airprint) Brother printer also shows up this way under sharing. I have never tried to manually connect to it via Finder sharing. Bonjour must have picked it up as a server.
True, but we know nothing about his network.
Is it by chance your router? My router has the ability to connect to USB storage and share it on the network, so it shows in my shared location in Finder, even though I don't use that feature. Does anyone else connect to your home network? If not, then maybe try changing your WiFi password.
Log into your home wifi router and find where it lists devices attached, likely you can work out what it is from there.
Highly unlikely to be aliens/hackers.
Log into your home wifi router and find where it lists devices attached, likely you can work out what it is from there.
Highly unlikely to be aliens/hackers.