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[Investigating][Severity: Critical][Ransomware]

Okinawa Prefectural College of Nursing: ransomware attack on its academic system

The academic support system of the Okinawa Prefectural College of Nursing was accessed from outside on 22 December 2025 and files on its servers were encrypted by ransomware. The system was cut off from external networks and stopped. As it handles student data, a leak could not be ruled out and an investigation continued.

Disclosed

2026-01-08

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

Timeline

  1. Started, Detected 2025-12-22
  2. Disclosed 2026-01-08
  3. 17 days

Attack or cause

Method
[Ransomware]
Impact
[Service outage]
Entry point
Unknown

Data exposed or at risk

–

Organizations involved

Open in organization search

Sources

  1. [1][Official]教務支援システムに対する不正アクセスについて(第1報)Okinawa Prefectural College of Nursing · 2026-01-08