Found this poking around. What you see is what I know.
If criminals were to target unsecured wireless routers, they could create an
attack that could piggyback across thousands of Wi-Fi networks in urban
areas like Chicago or New York City, according to researchers at Indiana
University.
http://www.networkworld.com/news/200...searchers.html
More
http://www.networkworld.com/communit...zb&rc=wireless