調查中

Yamagata Prefecture: about 26,800 entrusted records may have been exposed via YCC ransomware

Possible data leak: After the YCC file-server attack, the prefecture disclosed on April 17 that related data known as of April 16 had been stored on that server. No impact confirmed on live operational systems.

最後更新: 2026-11-09

此內容以 English 顯示。

概述

Notice uses “about 26,800” and approximate subset figures so count blank. Health admin, nurse filings and hospital lists among categories.

時間軸

不明發生
2026-04-02發現
2026-04-17公布

組織應對措施

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

使用者應對建議

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

資訊來源

県委託事業者へのサイバー攻撃について（プレスリリース資料）山形県 · 2026-11-09
県委託事業者へのサイバー攻撃について山形県 · 2026-11-09