I brought my laptop over to my Mothers today when I went to cut her grass. She has a PC that's someone gave her but she hasn't used it yet cus it needs a new hard drive. I was surprised to find someone nearby had an unsecured connection. So I connected my laptop to it for a few minutes just to show Mom what kinds of things she could use the internet for. Is this illegal? If not, does it cause any harm to the users account?