Chinese hackers target US critical infrastructure in cyber attacks.

A state-sponsored Chinese hacking group has been spying on a wide range of U.S. critical infrastructure organizations, from telecommunications to transportation hubs, Western intelligence agencies and Microsoft said. The espionage has also targeted the U.S. island territory of Guam, home to strategically important American military bases, Microsoft said in a report. While China and the United States routinely spy on each other, analysts say this is one of the largest known Chinese cyber-espionage campaigns against American critical infrastructure.