Cyber operations in North Korea have been launched increasingly in recent times, especially from the notorious Lazarus group, which has been observed spreading malware through various large-scale attacks, and deploying infostealers to grab credentials from western organizations.

North Korea on Friday threatened to use the "deadliest military means" against joint annual military drills between South Korea and the United States.

North Korea successfully test-fired a new anti-aircraft missile system, state-run media reported Friday, as Pyongyang continued to condemn U.S.-South Korea joint military drills.