In this photo taken Wednesday, July 30, 2014, Silicon Valley pioneer and Silent Circle co-founder Jon Callas holds up Blackphone with encryption apps displayed on it at the Computer History Museum in Mountain View, Calif. Revelations about the NSA's electronic eavesdropping capabilities, with targets reported to include Chancellor Angela Merkel, have sparked anger in Germany, and a boom in encryption services that make it hard for the most sophisticated spies to read emails, listen to calls or comb through texts. “Snowden’s leaks were a real boon for us,” said Callas, whose company sells an encryption app which allows users to talk and text in private. (AP Photo/Eric Risberg)
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