Itís logical to see that channel 6 and 11 are used widely; theyíre often the channels used by default by access point vendors. The interesting thing is to see that channel 13 is the second most used channel in the city. Just FYI, the use of this channel is prohibited in the United States of America, but itís allowed in most parts of the world. Channel 13 is being used in 802.11g/n networks, which shows that most of the access point in Dubai are new and probably use the 802.11n standard.
Indeed, WPA2 is the least-used encryption method. Most of the networks are open. Maybe in those networks some additional security filters are applied, like authorization by MAC address or via captive portals. However, such networks canít be called secure and if a user doesnít have their own VPN connection their data can be at risk.
Maybe this is another reason why WiFi administrators in Dubai think their networks donít need WPA2 encryption. If they think so, they are mistaken, since there are techniques which allow to hidden SSIDS to be revealed. And if we think about MAC filtering as a security concept, any MAC address can be sniffed and then spoofed. So itís not a good security approach.
There are other players, but not as significant as the three mentioned above.
2012 Dec 11, 11:33
The first diagram is not so clear because of similar colors (just a notice for next time). But I want to point that so great percentage of wep is concerning. I know that it is probably the old hardware and common people, but in area where I live (westeuropian country medium big city) the situation from 4-5 years ago is almost completly different and there are now rarerly wep.