調查中

Satte City: national-health data of 34,330 people may have leaked via subcontractor YCC

Possible data leak: AGS maintained the high-cost medical-care system and subcontracted to YCC. After YCC’s April 2, 2026 attack, city data held there was found on April 8; first notice April 17 and headcount on May 25.

最後更新: 2026-11-09

此內容以 English 顯示。

概述

34,330 unique people including former insured. FY2013 go-live eligibility and claims data retained contrary to the contract.

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

業務を委託する事業者におけるサイバー攻撃による不正アクセスについて（第2報）令和8年5月25日幸手市 · 2026-11-09
サイバー攻撃による不正アクセスについて（第1報）令和8年4月17日幸手市 · 2026-11-09