Report: Cyber-Spies Hack U.S. Electricity Grid

The Wall Street Journal reported Wednesday that cyber-spies hacked into the U.S. electric grid.

The report says the spies appear to be from China and Russia and so far are just observing the system.

Wall Street Journal's intelligence correspondent Siobhan Gorman says intelligence officials are increasingly concerned about the development.

"They have seen evidence that hackers, through the Internet, find weaknesses in these electronic systems that are connected to the electrical control systems and penetrate those so that they can basically do surveillance," Gorman tells NPR's Melissa Block.



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