Ransomware Attack on December 15, 2025, Encrypts Files on Subsidiary Servers and PCs with Immediate Isolation and Data Leak Assessment

Ransomware Attack on December 15, 2025, Encrypts Files on Subsidiary Servers and PCs with Immediate Isolation and Data Leak Assessment

A ransomware attack encrypted files on the subsidiary’s servers and PCs, prompting immediate isolation of affected systems. A data breach assessment is underway as teams work to restore systems. #RansomwareAttack #DataLeak

Information

  • Victim: (Not specified) | (Not specified in English)
  • Website: daicolor.co.jp
  • Country: Vietnam
  • Date Reported: 2025-12-15

Keypoints

  • The attack involved encryption of files on servers and PCs of the subsidiary.
  • Systems were immediately isolated to prevent further spread.
  • IT teams are actively working on system recovery.
  • An assessment of potential data leakage is in progress.
  • This incident was reported on December 15, 2025.

Read More: https://contents.xj-storage.jp/xcontents/AS03610/7f5e397c/2a50/4566/8091/b7cc4da65c66/20251217114618493s.pdf