technology companies say they were not aware of the secret key programs, but warned that the "potential for abuse,"

Two of the biggest technology companies in the world, Microsoft and Yahoo have expressed their deep concern Friday about the many attempts by the U.S. intelligence services and the United Kingdom to circumvent security systems Online that protect the privacy of millions of people online.

Microsoft said it had "significant concerns" about reports that the National Security Agency and its British counterpart, the GCHQ, had managed to crack the most codes that protect privacy of Internet users. Yahoo said he feared "a significant potential for abuse."

Google said it was not aware of covert attempts to compromise systems. However, according to a report in the Washington Post on Saturday, the company said it had accelerated encryption of information in their data centers in order to prevent the acquisition by the NSA and the intelligence agencies of other governments.

documents obtained by the plaintiffs Edward Snowden and published jointly by the Guardian, the New York Times and the nonprofit news organization ProPublica Thursday show that GCHQ agents worked to undermine the encrypted traffic in "big four" designated service providers such as Hotmail (email service from Microsoft that is now known as Outlook), Google, Yahoo and Facebook.

Yahoo responded with a strongly worded statement Friday. "We are aware of and did not participate in this effort, and if so, which offers a significant potential for abuse. Yahoo jealously guarded the privacy of our users and respond to government requests for data only after considering all the force of objections and in accordance with the law, "said a spokesman.

A spokesman for Microsoft said: ".. We have addressed these issues in our blog on July 16, we have a great concern about allegations of government activity reported yesterday and will support the government for an explanation "

tensions between technology companies and the U.S. government have increased. On Monday Microsoft and Google present their latest legal briefs in a common effort to force the foreign court Intelligence Surveillance allow to reveal more information about the requests for confidential information they receive.

A Google spokesman said. . "The safety of our users 'information is a priority to provide any government, including the U.S. government, with access to metrics recent reports that the U.S. government has found ways to thwart our security systems, we don' have no evidence of such a thing will never happen. provide user data to governments in accordance with the law. "

"By integrating the secret weaknesses in encryption systems to create a" back door "for access to surveillance, NSA creates a roadmap for cyber incursions by themselves to other less noble intentions, "Black said in a statement.

But on Friday, the office of the Director of National Intelligence (ODNI), which oversees U.S. intelligence, said it should "is not surprising that our intelligence agencies are looking for ways counter our opponents using encryption. "

In a statement Friday, the ODNI said the stories were "new", but warned that threatens national security.


"stories released yesterday, however, reveal specific details and ranked on how we conduct this activity, critical intelligence. Whatever revelations yesterday add to the public debate is offset by Blade card that give our opponents on the specific techniques that we use to try to intercept their communications in our efforts to keep the United States and our allies safe and provide our leaders with the information they need to make decisions difficult and critical national security, "said ODNI.
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