Overview
Notice says “about 3,400 people” so count blank. Staff info plus attendance, daily reports and customer contacts. No card numbers.
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
- 社員が使用していたパソコンの紛失について東京モノレール株式会社 · 2026-11-09