It is a major threat if you have file and printer sharing turned on. I have browsed parts of peoples computers before when they had it turned on and the scary thing is that a lot of people do have it turned on. Someone can connect to you and get your ip address and check very easily.


EDIT::Just wanted to say that I dont know if the technique would still work if you have a firewall. Im not too famliar with them so dont be to alarmed