China’s cyber army is preparing to march on America, says Pentagon
From the article you posted...
"Sami Saydjari, who has been working on cyber defence systems for the Pentagon since the 1980s, told Congress in testimony on April 25 that a mass cyber attack could leave 70 per cent of the US without electrical power for six months." "He told The Times that all major nations – including China – were scrambling to defend against, and working out ways to cause, “maximum strategic damage” by taking out banking systems, power grids and communications networks. He said that there were at least a thousand attempted attacks every hour on American computers. “China is aggressive in this,” he said. "