Nuclear power plants and other energy providers put on high alert as Homeland Security warns that hackers are trying to breach their computers systems

Nuclear plants and other energy providers have been put on high alert after Homeland Security revealed hackers had attempted to break into their computer system.

Wolf Creek Nuclear Operating Corporation, which runs a nuclear power plant near Burlington, Kansas, was one of the hackers’ targets according to a joint report by Homeland Security and the FBI last week.

The report carried an urgent amber warning, the second-highest rating for such a threat.