IN the "old" days i used drive around Limassol with my laptop getting statistics about open networks...
I was surprised when i found a lot of unencrypted networks or networks with simple WEP encryption used by major companies, banks, law firms etc
50% of networks used default password for their routers, one shipping company actually have exposed their corporate email parameters in the wild.
Thats was a couple of years ago... as i had no intention to harm i kept info confidential. However i did lock a few routers so at least they'd call a technician which would set everything up properly.