Most people have some sort of wireless network either at home or at work. The question is: are you still running WEP? If you are still running WEP, you should think about changing it. WEP can be cracked in about 30 minutes or less on a busy network. It is very easy to crack. You should use WPA2 and have a preshared key. If you are an enterprise, you should integrate it with a directory service. Finally you should disable SSID broadcast. While someone can still find the SSID, it will keep the people who are curious out.