With WPA mandatory and in most modern Wi-Fi devices, the Wi-Fi Alliance turns to its successor, WPA2: Wi-Fi Protected Access (WPA) implemented all of the necessary and possible fixes to wireless encryption that rendered WEP (Wired Equivalent Privacy) a lame duck--or even a dead duck.
WPA2 extends that further, bringing it in alignment with the ultimate IEEE 802.11i standard expected to be ratified this year. WPA2 adds AES (Advanced Encryption System) key support in the form of CCMP (Counter Mode CBC-MAC Protocol), which allows more cryptographically secure data in addition to the WPA-supported TKIP (Temporal Key Integrity Protocol) keys which work with silicon designed before WPA or 802.11i was a near-term possibility.