If you have an
unsecured wireless network in your
home or office, anyone in close
proximity can spy on your online
activities.
Depending if your
network has not been properly
configured, someone could gain full
access to your computer's hard
drive
In turn
they can view all your online
activity
over an
unsecured wireless network. click here
for example
Your neighbours could
piggy-back onto your Internet connection.
If your neighbour conducted some illegal activity while
online, it could be traced back
to your internet connection.
If you have
an unsecured wireless connection,
the odds of it being exploited are
high.
(Article extract - Brien Posey, www.brienposey.com,
2005)