How to secure wireless internet connection?

I am a network engineer and I will love to help you on this.There are lots of method through which you can secure your wireless network.First of all change the network setting of your wireless network by puttingsome password on your wireless network. So that on connection of any new useryour wireless network ask for the password. By the password only authorizeduser who know the exact password can use your wireless network. Second thingyou must do is install a original version of antivirus for the monitoring ofyour computer so that it can provide security to your system or it can preventfrom the hacker. You can download a Demo version of any antivirus for yourcomputer so that you can know that which one is better for your computer orwhich one provide the more security. You can install the Demo version of theantivirus like the Norton, Kaspresky, Panda, Avira. Hope these all informationcomes good for you.