All Breaches
East Japan Railway Data Breach
East Japan Railway Company (JR East), the primary passenger railway operator in eastern Japan, suffered an extensive unauthorized access incident targeting its Eki-net reservation system and customer membership databases.
6.1 Million
Reported Records
8
Data Types
Critical
Severity
Oct 20, 2026
Last updated
Exposed Data Types
8- Names
- Email addresses
- Phone numbers
- Dates of birth
- Physical addresses
- Partial credit card data
- Travel reservation details
- Member IDs
About This Breach
The breach impacted approximately 6.09 million customer records. The compromised information includes passenger names, email addresses, phone numbers, birth dates, home addresses, train travel bookings, membership identifiers, and masked payment card numbers.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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