Seoul St. Mary's Hospital has become the first medical institution in South Korea to obtain Information Security Management System (ISMS) certification covering its Picture Archiving and Communication System (PACS). The hospital said it strengthens enterprise-wide information security and prepares the institution for future digital healthcare regulations. The certification process was led by the hospital's Information Security Team and Radiology Team, with support from security consulting firm Happy Soft and PACS provider Taeyoung Soft. Following the certification, Seoul St. Mary's Hospital plans to strengthen its supply chain security, pursue ISO certification and expand its multi-network separation system to isolate administrative, internet, research and medical device networks. Seoul St. Mary's Hospital also noted that it ranked first in South Korea's 2025 Medical Information Security Challenge, organised by the Ministry of Health and Welfare and related agencies.