"To secure your wireless network - you are required to connect via cable (Cat-5) - which is why I needed a Cat-5 cable in my video to proceed with the process of securing my router. This is important as this prevents anyone from connecting to your network wirelessly and using Windows Live OneCare to wipe your wireless networking settings with their own settings. This is what the OneCare Team calls the "proof of ownership" check", LeBlanc explained.