The head of the National Security Agency warned Congress on Thursday that China and “one or two” other nations currently possess the capability of crippling the American power grid through cyberattacks.

Speaking before the House intelligence committee Thursday morning, Adm. Michael Rogers — the top official at both the NSA and United States Cyber Command — said that major systems, like the infrastructure that provides power to houses and facilities across the country, could be taken offline by state-sponsored hackers from abroad

via China & others can cripple US power grid, NSA admits for the first time — RT USA.