The security of London’s wireless networks remains pitifully slack. The number of wireless networks deployed in businesses across London has grown 300 per cent in the past year. The research identified that 63 per cent of the networks surveyed were left on default configuration, which clearly identifies the company owning the data and where it was coming from. The overall security picture has barely changed from last year when, using the same methodology, researchers found 67 percent of London companies surveyed left their wireless networks poorly secured against potential attack.
Source: https://www.theregister.com/2003/02/14/wlan_security_still_dismal_survey/