"A North Korean hacking group has successfully hacked one of South Korea’s largest state-run think tanks, responsible for researching nuclear technology, it has emerged. The breach, which happened on 14 May, affected the government-funded Korea Atomic Energy Research Institute (KAERI)... ... the attack involved 13 IP addresses, some of which were traced to Kimsuky, a unit with North Korea’s military intelligence agency..." https://www.itpro.co.uk/security/hacking/359927/north-korea-attackers-hack-nuclear-research-centre
North Korea Exploited VPN Flaw to Hack South's Nuclear Research Institute https://thehackernews.com/2021/06/north-korea-exploited-vpn-flaw-to-hack.html
