Wireless Network Watcher
Be aware of the risk of people piggy backing on your Wireless Network at home or at work, this can lead to hacking and unwanted visitors using your broadband service. We use a free utility from Nirsoft which will help you detect and protect yourself for the future. Wireless Network Watcher can be downloaded by clicking the below link..
http://www.nirsoft.net/utils/wireless_network_watcher.html