So we just have to trust the proxy operators and the add-on developers more than we trust Google, right?
I’ve been using an experimental firefox add-on to get around the man in the middle attacks...
The homepage for the project and the Firefox add-on
http://www.cs.cmu.edu/~perspectives/
Summary:
Perspectives is a new approach to help clients securely identify Internet servers in order to avoid “man-in-the-middle” attacks. Perspectives is simple and cheap compared to existing approaches because it automatically builds a robust database of network identities using lightweight network probing by “network notaries” located in multiple vantage points across the Internet.