As the NSA surveillance story goes from bad to worse to Philip K. Dick, some of the Silicon Valley companies implicated in the so-called "PRISM" program are denying that they've ever heard of it.

BROOKE GLADSTONE: And I'm Brooke Gladstone. And here’s Senator Tom Udall. SENATOR TOM UDALL: It's very, very difficult to have a transparent debate about secret programs approved by a secret court, ...

After the news broke yesterday about a secret government surveillance program called PRISM, the companies named in the news reports — led by Google, Apple, and Facebook — responded with denials. In ...

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In June 2013, former National Security Agency (NSA) contractor Edward Snowden leaked documents about a program called PRISM, claiming it collected users’ data right from the servers of American tech ...

Everyone from Mark Zuckerberg down to the average Facebook user has expressed surprised outrage at the existence of PRISM, a top-secret government program that the National Security Agency uses to ...

U.S. Federal Bureau of Investigation access to overseas surveillance collected by sister organization the National Security Agency has expanded in recent years, with the law enforcement agency gaining ...