Keisei Electric Railway security incident history
Hacking, data breaches and other security incidents involving Keisei Electric Railway, with related coverage.
Incidents: 1 · Most recent
Keisei reservation system breach may expose 3.37 million customer records
3.4mImpact: Possible exposure of up to approximately 3.37 million customer records
Unauthorised access to Keisei Electric Railway’s Skyliner seat reservation system on 11 November 2026 raised concerns that up to approximately 3.37 million customer records may have been exposed. The information includes user IDs, encrypted passwords, names, phone numbers and email addresses. The company has suspended online reservations and is investigating the scope of the breach, with no timetable for resuming the service as of 14 November.
Related reports: 15 →