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