How to block network hogger from stealing bandwidth? This is the question that you will ask when your Internet broadband speed turns very slow. And suspect that it is being used by others. No worry, Wi-Fi Killer for Android is here to help you. WiFiKill allows you to scan your Wi-Fi network for devices, see their vendor and cut network connection for specified devices. This way you can get rid of network hoggers. Note – root access is required.