On this:
https://wikileaks.org/Op-ed-Google-and-the-NSA-Who-s.html
there are links on that page that point out multiple e-mails from the STRATFOR leaks and other files that point to Google being deeply embedded with the U.S. security apparatus.
Also: https://www.theguardian.com/world/2013/aug/23/nsa-prism-cost...