According to the outcome of recent court cases, it may be legal for others to listen in on WiFi traffic over unsecured networks.  Check out this post on ZDNet. 

Since WiFi or wireless network traffic is broadcast over the air, your data is highly susceptible to intruders.  There are a few security protocols used over WiFi; however, they can all be hacked relatively easily and none provide the protection as a wired connection.  If your business has the need for a WiFi network, we recommend taking extra steps to ensure your critical proprietary, financial, and personal data are not left out in the open for thieves.

If you are concerned about the security of your wireless network or even your wired network, give us a shout.  Gravity Systems will examine your network setup and make sure everything is locked up tight.

Stay safe out there!

Ross