I know security statistics are hard to find to begin with, and 802.11 networks are new enough to the general populance that those stats are probably even more rare, but I've got to ask anyhow..

Does anyone know of some WiFi security statistics out there?

Can be either stats on unsecured/encrypted APs, attacks performed, volume of attacks... even for specific cities. For example if some War Driving wonks decided to put stats up on hotspots they've found, that would serve my purposes greatly.

Thanks much (again)

l00p