zz from Google:
What is Google Secure Access?
Google Secure Access is a downloadable client application that allows users to establish a more secure WiFi connection.
Why would I want to download and install Google Secure Access?
Google Secure Access allows you to establish a more secure connection while using Google WiFi. By using Google Secure Access, your internet traffic will be encrypted, preventing others from viewing the information you transmit.
Does Google Secure Access connect to a VPN server?
Yes, Google Secure Access connects to Google's VPN ("Virtual Private Network") server provided for this service.
Why did Google develop Google Secure Access?
One of our engineers recognized that secure WiFi was virtually non-existent at most locations. As a result, he used his 20% project time to begin an initiative to offer users more secure WiFi access. Google Secure Access is the result of this endeavor.
More information in http://wifi.google.com/faq.html
Click here to download: http://wifi.google.com/download.html
ps, you do NOT need a wireless connection to use this software :)