I know it is a wireless internet connection and i use the shit out of my neighbors,but i wana know what the details of WIFI are. How it works and if it is safe to surf personal sites like paypal and Wellsfargo? TIA!!!!!!!!!
As far as security, if you have the security implemented correctly, then yes it is safe. Unfortunately too many people leave it completely open and this allows others to use their network.
...and I don't know why. it's quite easy to secure your network...why not do it? I've got 3 neighbors around me that I can receive their wifi signal, and not a single one of them is even password protected
It has nothing to do with your laptop letting them in. You could use a packet sniffing program view the packets coming out from your computer and from there compile a good way to get into your computer. No computer is 100% secure.