http://www.grc.com/sn/sn-170.htm
Steve and Leo begin with a refresher on WEP, the original technology of WiFi encryption. With that fresh background, they then tackle the detailed explanation of every aspect of the recently revealed very clever hack against the TKIP security protocol. TKIP is the older and less secure of the two security protocols offered within the WPA and WPA2 WiFi Alliance certification standards.