Nothing can happen legally, though you are using someone else's connection, with it being an open connection (not needing a password of any kind) it's also going to be more open to hackers. As long as you have a good firewall and anti-virus you should be fine, but i would get your own interenet and have them set up a password setup. Let me put it this way when you use someone else's internet your using up what they are capable of (bandwidth) and if they get charged by the Gigabyte like some people are, your racking their bill up. How would you like that? Sooner or later they may cut you off by activating their passwords and stuff (the passwords are known as security keys). Then your without internet. The safest way is to get your own, while what your doing is ok temporary,look into the internet service providers in your area and compare shop. Hope this helps and have a safe and fun time surfing! I might add, that the law is different in all states, while it could be illegal in one it isn't in another one. So tread carefully. It depends on the state, as some feel that if your dumb enough not to activate your keys then you should have your internet "stolen". They feel that it's hard to steal something when you have it out, why do you think alot of places have wifi? So be careful and ultimately get your own to be at the safest.