Our company just sent out an e-mail instructing all users to remove wireless cards from their laptops when in a customer site . . . I guess one customer got a virus because their wireless network wasn't encrypted, and they somehow made the logical jump that it was the fault of our guy. Not sure if the virus came from our tech or not (if so, how would they tell? The router's log, or what? Seemed kinda fishy to me . . .)
Don't get me wrong, but if your IT department is too stupid to secure your wireless network, should you really be suing vendors for 500K?
It's amazing, about one out of every three wireless networks I find are unsecured. A lot of them are fairly big companies, too.