Quote:
Then make sure your router is using MAC address authentication and WPA encryption;


MAC address filtering would be a better term. Authentication implies a false sense of security due to the implication of a login process occurring. Changing a MAC address on a network device is trivial, and seeing what is active over the air is also trivial to then get the address needed to spoof.

WPA encryption (preferability WPA2 if possible) is the best and really only step needed to secure a wireless access point. MAC filtering is a hassle for no security gain, and same for turning off SSID broadcasts. Additional securing can be done behind the router on the network side (wireless clients on an isolated network, VPN required, etc), but tend to be a bit much for home connections.