AirDefense says that during monitoring at the DefCon hacker convention in Las Vegas last weekend the company identified new security issues specifically effecting wireless LANs.

The first is a new Denial-of-Service (DoS) attack that can knock "targeted user stations off the WLAN, forcing stations or access points to shutdown, or disrupting all WLAN connections," said Scott Hrastar, co-founder and CTO of AirDefense, in the company's announcement. This DoS attack includes a "flood" of control frames that will disrupt everything on a given channel. AirDefense has developed a signature for this attack and added it to the AirDefense Guaurd security/monitoring product.

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