Second Report: Unauthorized Access to Part of Our Service Systems

Second Report: Unauthorized Access to Part of Our Service Systems
IDC Frontier announced a ransomware attack targeting its IDCF Cloud service, affecting the East Japan Region 1 and impacting 495 companies and local government organizations. The company isolated the network and shut down systems to contain the incident. #IDCFrontier #IDCFCloud #EastJapanRegion1

Information

  • Victim: IDC Frontier
  • Website: idcf.jp
  • Country: Japan
  • Date Reported: 2026-10-07

Keypoints

  • IDC Frontier reported a ransomware attack on its IDCF Cloud service.
  • The incident occurred on October 7, 2026 at 3:40 a.m.
  • East Japan Region 1 was affected by the attack.
  • 495 companies and local government entities were impacted.
  • The company isolated the network to limit the spread of the threat.
  • Systems were shut down as part of the containment response.

Read More: https://www.idcf.jp/news/topics/20261007002