http://www.dartvernon.com/security-mic/
Wireless Security Cracked.
Author: Beverley A MacKenzie
Gone in 60 second, is how you could describe a new security attack on home wireless networks. Scientists in Hiroshima University have identified a security attack which exploits a wireless network security weakness. The attack which is known as the Beck and Tew attack, under normal circumstances takes between 12 – 15 minutes to execute. However it has been discovered that when this attack is combined with the standard man-in-the-middle attack, that a wireless network could be breached within 60 seconds.
The attack exploits a feature of the 802.11e wireless network Quality of Service (QoS) system. The 802.11e wireless network has 8 different channels. The attack is effective because it is distributed across all of the channels.
The Hiroshima University white paper describes how a Hacker can recover a message integrity check (MIC) from data packets, being transmitted across a wireless network. The report states:
“.......This attack recovers a MIC key and a plaintext from an encrypted short packet and falsifies it......”
Scientist have said that such a security breach, could lead to a Hacker taking control of a computer’s internet session; or capturing packets, or falsifying messages.
A Scientist stated...
“....That such an attack would completely undermine the confidentiality and integrity of all information received over the internet.”
In the report Hiroshima University assured us that the new Beck and Tew attack would only be affective, when the 802.11e is combined with Wi-fi security (WPA). The report also demonstrated that due to the nature of the attack, it would be near on impossible to detect it.
Details of these findings were covered in Ohigashi and Morii report, ‘A Practical Message Falsification Attack on WPA’.
About the Author:
Beverley is the CEO of Logical Step. Her mission is based on providing affordable, reliable and desirable computer hardware and software.
Her ambition is to provide all things techie. Through Logical Step she provides: components; computers; LCD and plasmas monitors; media; network gear; software; cables; hard drives; memory; cases; USB memory sticks and so much more.
She has also launched the Logical Step Blog. The aim of the Blog is to make available articles and news, which keeps you informed of technical, computing and science news.
Article Source: ArticlesBase.com - Wireless Security Cracked
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