Science & Tech · Cybersecurity · 1 hr ago
Data from three Japanese rail firms’ reservation systems exposed
Unauthorized access at Ymirlink exposed reservation-system data used by three Japanese rail companies.
JR Tokai, JR West and JR Kyushu announced the leak on October 26.
The data was registered in their Shinkansen reservation system, which people use to book bullet train journeys.
Email addresses were among the personal information exposed, but the companies have not confirmed the full range of data.
The number of affected records is still being checked.
The companies said the incident followed unauthorized access to Ymirlink, which they used for the service.
They are confirming how many people were affected; no further steps were stated.
Personal information from the Shinkansen reservation systems of three Japanese railway companies was leaked after unauthorized access to Ymirlink.
JR Tokai, JR West and JR Kyushu announced the leak on Oct. 26.
The exposed information includes email addresses registered in the reservation systems.
The companies were still confirming how many records were affected.
- Who
- JR Tokai, JR West and JR Kyushu, and users of their reservation services.
- What
- Personal information, including email addresses, was leaked from Shinkansen reservation systems.
- When
- The companies announced the leak on Oct. 26, 2026.
- Where
- The reservation systems used by the three railway companies.
- Why
- Unauthorized access to Ymirlink led to the leak.
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- Companies
- JR Tokai, JR West and JR Kyushu
- Service
- Shinkansen reservation systems
- Information
- Email addresses and other personal information
- Announcement date
- Oct. 26, 2026
- Affected records
- Number still being confirmed