The hacking unit is tasked with gathering strategic intelligence.

The veteran hacking crew has been at the heart of Pyongyang's efforts to gather intelligence by breaching computer systems.

The research reveals prolific North Korean hacking efforts emanating from one of its most visible hacking groups.

Three groups targeted seven prominent companies in Canada, France, India, South Korea and the United States, Microsoft said.

Researchers say they combined government data with their own findings to identify previously undocumented spyware.

The U.S. government is turning its attention to "Kimsuky" hackers.