International Law

Only 12% of people apparently "borrow" unsecured wifi.  I'm just surprised the percentage isn't higher:

Although it is illegal in some parts of the world, 12% of U.S. and U.K. respondents to an Accenture survey have logged on    to someone else's unsecured Wi-Fi connection.

Data that is sent via unsecured wireless routers is unencrypted and could theoretically be read by anyone who had the right    network sniffing tools, but many people have tried logging on to unsecure Wi-Fi.

Logging on to open Wi-Fi signals is most popular with 18- to 34-year-olds, Accenture said. Nearly a third of them said they    had done this at some point.

The practice is apparently more common in the U.S., where one in seven have piggybacked on free Wi-Fi networks, than in the    U.K., where Accenture found that it was attempted by one in 11.

In some parts of the world, Wi-Fi piggybacking is considered to be a form of criminal hacking. In August, police arrested    a 39-year-old man for using his laptop to connect to an unsecured Wi-Fi connection as he sat on a garden wall in the London    suburb of Chiswick. And in a case that was widely publicized in the U.S., Sam Peterson of Sparta, Michigan, was charged after using a cafe's wireless connection to check his e-mail.

Read more here (from Network World).