Track Intruders on Your Home Wi-Fi Network
Strangers may be lurking on your home Wi-Fi network. Don't assume that you are protected just because you have Wi-Fi encryption. Encryption-especially WEP-can be cracked. And even MAC-address filtering can be spoofed. To give interlopers the boot, download and install the free version of Network Magic.
The program shows you a map of all of the computers, media servers, printers, and other devices connected to your network. Any listing that you can't identify is a potential intruder.