North Korea APT Triumvirate Spied on South Korean Defense Industry For Years

Lazarus, Kimsuky, and Andariel all got in on the action, stealing "important" data from firms responsible for defending their southern neighbors (from them).

https://www.darkreading.com/cyberattacks-data-breaches/north-korea-apt-triumvirate-spied-on-south-korean-defense-industry-for-years