調查中

Yamagata Kotsu: bus and taxi customer data may have leaked via YCC ransomware

Possible data leak: After the April 2, 2026 YCC attack, build-contract data including ended contracts was found on the vendor server by April 16; disclosed April 17.

最後更新: 2026-11-09

此內容以 English 顯示。

概述

Bus core 1,307 and taxi core 120,573 (with duplicates) are subsets and not summed (count blank). Name, address and phone among fields.

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

株式会社YCC情報システム社に対するサイバー攻撃に係る当社個人情報の漏えいの事案について山形交通株式会社 · 2026-11-09