Free wi-fi cafes and other wireless hotspots in San Diego.
If you are using wireless WiFi (802.11b) public hotspots then you are sending and receiving all of your traffic in “the clear”. It is penetrating walls, it is zooming across the street, and it is all readable plain text.
A VPN (Virtual Private Network) protects you by encrypting your traffic and cloaking your destination on any network, wired or wireless.