AP source: Spies compromised US electric grid

"SAN JOSE, Calif. (AP) - Spies hacked into the U.S. electric grid and left behind computer programs that would let them disrupt service, exposing potentially catastrophic vulnerabilities in key pieces of national infrastructure, The Associated Press has learned.

..."The vulnerability may be bigger than we think," the official said, adding that the level of sophistication necessary to pull off such intrusions is so high that it is "almost without a doubt" done by state sponsors."

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