Unknown computer in "Shared" section of finder
I'm linked to my home wifi, and my home windows computer is connected to the same wifi and therefore, the home computer, appears in the "Shared" section in Finder. However another foreign PC has popped up in "Shared" .. does that mean that that computer has somehow tapped into my wifi? I don't have "Sharing" turned on so I assume my Mac cannot be accessed.. But since my Windows PC doesn't have this option, can this person hack into it?
Mac Pro