[Osama Gulryz]

I just started White Hat hacking . I fixed some infected pcs . But for me there are more challanges . I wanna know how to secure a Wifi connection from being hacked and also if any other White hat hacking tutorial is welcome

[chmod]

We have tutorials on a lot of this already, removing viruses manually malware analysis and @Ex094 wrote a brilliant tutorial on securing wireless networks already. Search and ye shall find. If you get stuck just ask and we will try to help you just remember to research an answer yourself first. not only does this eliminate possibilities that won't work for you it will help you provide more details and in turn get a better answer. Good luck!

[Saurfang]

Securing Wi-Fi is a pretty trivial (and ridiciously straight-forward) thing. The only thing you can really do is enable WPA2 encryption on the Wi-Fi network. You do this by accessing your router's settings (typically 192.168.1.1). Anything less than WPA2 can easily be hacked by a 12 year old with an android. Beyond that, the only other sensible thing would be to disable your SSID broadcasting.

[SirDoSer]

Is there anyway to stop a hacker from hacking you?

You can't make a "hacker stop hacking you" or make your computer or WiFi "un-hackable." But what you can do is prevent the most common tricks used to hack.