ELIAS GROLL
Without the cooperation of American companies — both voluntary and compelled — the National Security Agency’s system of mass surveillance simply would not have been possible. And on Tuesday, Reutersadded the name of yet another American corporate giant to the list of those who have made it possible for American intelligence to intercept huge troves of information: Yahoo.
According to the news service, the American internet giant designed custom software to filter its users’ emails according to a set of search terms, and deliver those messages to the NSA. The decision to enable NSA surveillance was reportedly made by CEO Marissa Mayer and without the knowledge of the company’s security chief, who quit in protest when he learned of the program.