You’re at the airport waiting for your flight. With time to kill,
you’re thinking of connecting your laptop to the airport's Wi-Fi to
check your office e-mail...do some personal banking...or shop for a
gift for your spouse.
But first, consider this: odds are there’s a hacker nearby, with his
own laptop, attempting to "eavesdrop" on your computer to obtain
personal data that will provide access to your money or even to your
company's sensitive information.
http://theciscocommunity.com/forums/t/21.aspx