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April 4, 2007
Wireless Encryption Protocol can be hacked...
This is potentially a very serious problem:
Code breakers have discovered a technique for extracting a 104-bit Wired Equivalent Privacy (WEP) key in under a minute.Cryptographic weaknesses with the first generation wireless encryption standard have been known for years, but the latest attack requires the capture of just a tenth of the number of packets required by previous approaches. The technique allows for 50 per cent probability of the recovery of a 104-bit WEP key in around a minute (on a 802.11g network running at full speed), and with the capture of 40,000 packets. Doubling the capture period extends the probability of capturing the key to 95 per cent.
The recommendation from experts is to switch to Wi-Fi Protected Access (WPA). For a corporate wireless network, this is no big deal; the geeks handling a corporate network can handle such a switch. What's concerning are all the small office and home Wireless Access Points. Over time, we've managed to convince these small users to configure WEP to keep people from sitting in a car in front of their house/office and using their network to do things like exchange kiddie porn. If these networks are easily cracked, we just as soon not do anything.
Posted by Edward J. Branley at April 4, 2007 11:23 AM
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