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NSA may have used Google and Yahoo’s fiber-optic cables against them 

In the days of the Cold War, the Soviet Union was targeted by a spy operation code-named Echelon. The operation involved eavesdropping on the superpower and its allies through voice, fax and data traffic via satellite, microwave and fiber-optic cables. If rumors are correct, it may be that Echelon inspired the NSA. Sources close to Google and Yahoo are claiming that the government agency could have spied on the tech giants via their fiber-optic cables.

The fiber-optic cables link data centers around the world. The latter are locked down through advanced security, but the information passing through the fiber-optic cables remains unencrypted and therefore ripe for tapping into. People have pointed accusing fingers at Level 3 Communications, whose fiber-optic cables are the ones being used by both Google and Yahoo.

Until these revelations, Google and Yahoo had only considered their front-ends rather than their back-ends. In response to these allegations, both companies have begun to encrypt the data that runs on the cables between their data centers, with Microsoft set to follow suit.

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