It proberly has security on it and u cant get on there system without knowing right security and password but some do not have security just look around and u should find something. If you have a wireless connection in your home (if u get one) you can only go so far b4 loosing signal and u have babyback onto someone's system. Most wireless connections only go so far depending on the signal. Mine is in bacement and only 55% upstair's and like 1% outside the front door and i do pick up someones signal around my home and outside of my home (not mine) that i can't use.
Anyway hope that helped.