The regulator will check how insurers set and change actuarial assumptions before new rules on those assumptions are due to take effect on 1 January 2027.
The cases have drawn attention to K-SURE's buyer-screening processes, with lawmakers urging a reassessment of underwriting standards and coverage approval practices.
They will combine claims intelligence and specialist expertise to identify suspicious claims patterns and curb insurance fraud across health and motor lines.
Asia's commercial space sector is expanding faster than local insurance capacity, leaving operators reliant on overseas reinsurers as orbital congestion emerges as a new underwriting risk.
The merger is intended to enhance Kyobo Life's digital insurance capabilities by combining Lifeplanet's online platform with its broader life insurance franchise.
The regulator plans closer oversight of claims assessment practices, with a particular focus on claims leakage, dispute trends and potential on-site reviews.