http://www.computerworld.com/s/article/9137177/New_attack_cracks_common_Wi_Fi_encryption_in_a_minute?taxonomyId=17 

By Robert McMillan
August 27, 2009
IDG News Service

Computer scientists in Japan say they've developed a way to break the 
WPA encryption system used in wireless routers in about one minute.

The attack gives hackers a way to read encrypted traffic sent between 
computers and certain types of routers that use the WPA (Wi-Fi Protected 
Access) encryption system. The attack was developed by Toshihiro 
Ohigashi of Hiroshima University and Masakatu Morii of Kobe University, 
who plan to discuss further details at a technical conference set for 
Sept. 25 in Hiroshima.

Last November, security researchers first showed how WPA could be 
broken, but the Japanese researchers have taken the attack to a new 
level, according to Dragos Ruiu, organizer of the PacSec security 
conference where the first WPA hack was demonstrated. "They took this 
stuff which was fairly theoretical and they've made it much more 
practical," he said.

They Japanese researchers discuss their attack in a paper presented at 
the Joint Workshop on Information Security, held in Kaohsiung, Taiwan 
earlier this month.

[...]


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