(London Guardian) America’s tech giants continued to deny any knowledge of a giant government surveillance program called Prism, even as president Barack Obama confirmed the scheme’s existence Friday.

With their credibility about privacy issues in sharp focus, all the technology companies said to be involved in the program issued remarkably similar statements.

All said they did not allow the government “direct access” to their systems, all said they had never heard of the Prism program, and all called for greater transparency.

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