调查中

Mikawa Town: data of 1,974 older residents may have leaked via contractor YCC Information Systems ransomware

Possible data leak: After the April 2, 2026 cyber-attack on YCC Information Systems, the town disclosed that its FY2016 care-prevention survey data had remained on the vendor’s server.

最后更新: 2026-11-09

此内容以 English 显示。

概述

1,974 people: addressee/insured info, name, birth date and address. Confirmed exfiltration not established.

时间线

未知发生
2026-04-02发现
2026-04-15披露

组织应对措施

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

用户应对建议

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.

信息来源

株式会社YCC情報システムに対する不正アクセス事案について三川町 · 2026-11-09