Overview

• Authorities said a lithium‑ion UPS battery exploded during relocation work in a fifth‑floor room at the National Information Resources Service in Daejeon, triggering a fire brought largely under control about 10 hours later.
• The outage has suspended mobile ID, online postal services and many government websites, with the 119 emergency service’s location tracking and the pan‑government Onnara intranet also down.
• The government raised its information‑systems alert to the highest level and activated a central disaster response unit, issued emergency texts, provided alternative service portals and ordered manual processing and deadline extensions.
• Restoration hinges on repairing damaged temperature and humidity controls before a staged server restart that will prioritize postal and financial services, and officials have given no timeline for full recovery.
• About 200 firefighters responded and one worker suffered first‑degree burns, while officials reported that nearly 400 battery packs were destroyed and warned of reignition risks complicating site access.