Yamagata Prefecture security incident history
Hacking, data breaches and other security incidents involving Yamagata Prefecture, with related coverage.
Incidents: 1 · Most recent
Unauthorised access at Yamagata Prefecture newsletter contractor
Unauthorised access occurred at the company responsible for running Yamagata Prefecture's email newsletter. The prefecture published its investigation findings on 12 November, with no information leaks confirmed from services it operates.
Related reports: 10 · last report →