China-Linked Hackers Lurk in Critical US Systems

FILE - Broken Ethernet cable hangs in front of binary code and words "CYBER SECURITY" in an illustration photographed on March 8, 2022. Several U.S. agencies warned Wednesday that China-linked hackers had infiltrated some U.S. companies linked to sectors such as energy and water.

China-linked hackers targeting key sectors of the U.S. economy appear to have been hiding in key computer systems and networks for at least five years, according to a new warning from the United States and key allies, who urge companies to take urgent action to mitigate the risk.