Wireless network system is mainly depends on it’s owner and if you are a user, just it take little. You can use any internet security to avoid the problems and any security threats. For a owner there are lot of thing to know and you have to know that every people in the world is not honest perhaps more people is dishonest. The first thing of defense for your Wire less network is encryption. Do you know about the WPA, WEP? You have to know about them. If you know about this that’s better if not you has to browse them in Google but I recommend you to use WPA as it is easy to creak WEP.