Overview

• As of early Sept. 28, more than half of network devices were restored and 763 of 767 key security devices were back online, officials said.
• Authorities plan to sequentially restart 551 systems not directly damaged, with 96 systems confirmed affected by the fire and no firm timeline for full recovery.
• The blaze began Sept. 26 when a lithium‑ion UPS battery exploded during relocation work on the fifth floor, triggering thermal runaway; one worker sustained first‑degree burns.
• A total of 647 government systems were preemptively shut after temperature and humidity controls failed, disrupting mobile ID, Korea Post services, legal databases and internal networks.
• Roughly 384–400 destroyed battery packs were removed and submerged for safety, a joint police–fire–forensic probe is underway, the alert level was raised to the highest tier, and leaders ordered all‑out restoration with deadline extensions for affected services.