Iran has been working on cyber warfare capabilities that security experts say are aimed at critical U.S. infrastructure systems, and could be launched in retaliation to any attack on its nuclear facilities, according to a report from Joseph Farah’s G2 Bulletin.

In addition to Iran, China and Russia also are assessed to be able to attack America’s power grid and industrial control systems, which not only are highly complex but are extremely vulnerable to cyber attacks.

One U.S. intelligence source said that the Chinese have attempted to map U.S. infrastructures, particularly the electrical grid. Another source added that the Russians have been doing the same thing and may have penetrated the U.S. electrical grid system and left behind software programs to disrupt the system.

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