hi i want to know that if i m connected to net throgh my wi fi router, is it possible that While I am surfing net, can anyone connect to my wifi secretly? and if he connects then can he use net without any login because I logged in already?
If your ISP doesn't allow more than 1 user at a time , as in the case of reliance, then no , it is not possible for anyone to connect as long as you are logged in. But if you have already configured the wifi router to the settings that it can share you'r internet connection , then it is possible for other users to connect while you are connected.