China, Russia, Iran top cyber threats, US intelligence finds

Computer code is seen on a screen above a Chinese flag in this July 12, 2017 illustration photo. REUTERS/Thomas White/Illustration

China, Russia and Iran pose the biggest threats of computer attacks to spy on US companies and steal their trade secrets, according to a report from the Office of the Director of National Intelligence. 

The three countries have conducted sophisticated, large-scale hacking attacks across multiple US industries, targeting the networks of technology and manufacturing contractors, defence contractors and utilities, according to the 20-page report compiled by office’s National Counterintelligence and Security Centre.