Overview
Bus core 1,307 and taxi core 120,573 (with duplicates) are subsets and not summed (count blank). Name, address and phone among fields.
Timeline
- Occurred
- Discovered
- Disclosed
Organization response
Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.
What you can do
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.
Sources
- 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