WPA2 secure, but not completely

Wi-Fi Protected Access (WPA) was the latest version of encryption…more secure than that which came before it (Wired Equivalent Privacy/WEP). As has been, that which can be “locked” can be “broken into”; there are no absolutes in security. A presentation about this issue will be given at a conference in Japan: “Gone in 900 Seconds, Some Crypto Issues with WPA” – Erik Tews

First, I suggest you consider updating:
your operating system…
any software you use related to (wired and wireless) networking…
and your hardware (routers, network cards, etcetera).

The weak portion of WPA is the Temporal Key Integrity Protocol (TKIP), not the Advanced Encryption System (AES). If you can, in your wireless router, consider (only using AES and) disabling TKIP.

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Links to more information:

The Wi-Fi Protected Access 2 (WPA2)/Wireless Provisioning Services Information Element (WPS IE) update for Windows XP with Service Pack 2

Battered, but not broken: understanding the WPA crack

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