Published November 20, 2014    
    WASHINGTON  The head of    the NSA issued a blunt warning Thursday to lawmakers: China can    shut down the United States.  
    The grim forecast came from Admiral Michael Rogers, the    director of the National Security Agency and commander of the    U.S .Cyber Command.  
    Rogers said he believed China along with one or two other    countries had the capability to successfully launch a    cyber-attack that could shut down the electric grid in parts of    the United States.  
    Rogers reiterated that if the U.S. remains on the defensive, it    would be a losing strategy.  
    Speaking to the House Intelligence Committee, the NSA director    said the cyber threat was so real, and that agreeing to an    international code, a sort of laws of law in the cyber realm    is urgent.  
    The possibility of such cyberattacks by U.S. adversaries has    been widely known, but never confirmed publicly by the nation's    top cyber official.  
    At a House hearing, Rogers says U.S. adversaries are performing    electronic "reconnaissance," on a regular basis so that they    can be in a position to attack the industrial control systems    that run everything from chemical facilities to water treatment    plants.  
    Outside experts say the U.S. Cyber Command also has that    capability, which in theory should amount to mutual deterrence.  
    Fox News' Catherine Herridge and The Associated Press    contributed to this report.  
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NSA director: China can damage US power grid - VIDEO: NSA head pushes for offensive strategy