Government

Shonai Town

Shonai Town (Shonai, Yamagata; Municipality) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-04-03.

Profile

Metric	Value		As of	Source
Residents	18,738		2026-01-01	MIC: 住民基本台帳に基づく人口、人口動態及び世帯数（令和8年1月1日現在）

		Incident	Role	Impact level				Methods	Impacts		Status
2026-04-03	2026-10-23	YCC Information System: ransomware attack	[Through a supplier]	[Major]	[Critical]	7 Yamagata City, Yamagata Kotsu Co., Ltd., YCC Information System Inc., Yamagata Prefectural Government, Shonai Town, Takahata Town, Yamagata University	Yamagata	[Ransomware][Credential abuse]	[Data leak][Service outage]	121,880	[Contained]