At lunch yesterday with some co-workers, these otherwise bright technical people insisted that 802.11b networking is very secure. There is ample evidence available which disproves this, even for those networks using 128-bit encryption. For their benefit, I offer this article from wired.com, links to AirSnort and WEPCrack utilities for testing the security of a network, and this entry and this entry from the AirSnort FAQ (hold your mouse over the links to see the the subject of each FAQ entry).