The U.S. State Department warned on Thursday that China was capable of launching cyber attacks against critical infrastructure, including oil and gas pipelines and rail systems, after researchers discovered a Chinese hacking group had been spying on such networks. A multi-nation alert issued Wednesday revealed the Chinese cyberespionage campaign had been aimed at military and government targets in the United States. The Chinese government has rejected assertions that its spies are going after Western targets, calling the joint warning issued by the United States and its allies a "collective disinformation campaign". "The US intelligence community assesses that China almost certainly...