In 2008 Yahoo became part of the National Security Agency’s secret Internet surveillance program, Prism, according to leaked N.S.A. documents, as did seven other Internet companies. http://www.nytimes.com/2013/06/14/technology/secret-court-ruling-put-tech-companies-in-data-bind.html?hp  Like almost all the actions of the secret court, which operates under the Foreign Intelligence Surveillance Act, the details of its disagreement with Yahoo were never made public […]