There are three basic risks: 1  If you have computers that share files or a printer among themselves, your neighbor may be able to access them. 2  There’s a tiny risk that depending on how your router routes traffic that your neighbor may be able to “see” that traffic.f I don’t need my WiFi on or will not be using it for a while, I shut it off via the modem/router wireless settings. If you don’t use your WiFi often, shut it off. It only takes the click of a button to turn it off and on. And it keeps others from connecting without your knowledge.