A Chinese hacking group linked to state authorities in Beijing has upgraded its espionage capabilities to target companies with headquarters in the United States and East Asia, warned an alert from Japanese and American cyber agencies.

The latest campaign from BlackTech has targeted networks of regional subsidiaries across government, industrial, technology and defense industrial base sectors. BlackTech, active since 2010, is also tracked as Circuit Panda, Palmerworm and Temp.Overboard. The group has stolen intellectual property from Taiwanese technology firms and occasionally has targeted companies in Japan and Hong Kong.