Long read... 

Long before company founders Larry Page and Sergey Brin hired Schmidt in 2001, their initial research upon which Google was based had been partly funded by the Defense Advanced Research Projects Agency (DARPA). And even as Schmidt’s Google developed an image as the overly friendly giant of global tech, it was building a close relationship with the intelligence community.

http://www.newsweek.com/assange-google-not-what-it-seems-279447