Exploiting and Protecting 802.11b Networks

iforgotmyfirstlogon writes: "A couple of guys from Extreme Tech drove around New York, New Jersey, Boston, and Silicon Valley with a high gain antenna to see how many (secure and) unsecure wireless networks they could tap into. They used NetStumbler and Linux AirSnort to help them search. Results? They came across over 800 networks and less than 40% had any sort of security."