[Martin Beck] and [Erik Tews] have just released a paper covering an improved attack against WEP and a brand new attack against WPA(PDF). For the WEP half, they offer a nice overview of attacks up ...

Roku is not compatible with AES, but it works perfectly with TKIP. So, you need to make sure that your “Security Options” is not set to WPAK2-PSK (AES). To do that, you can follow the given steps.

When TKIP encryption is used, a message integrity code is included to make sure that the data is not spoofed. It replaces WEP's weaker packet guarantee, which is called cyclic redundancy check.