Company

Seicomart Inc.

Seicomart Inc. (Chuo, Sapporo, Hokkaido; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-09-29.

Profile

Industry/type

Wholesale and retail trade

Location

Hokkaido, Sapporo, Chuo

Services

Seicomart app

Website

https://www.seicomart.co.jp/

Public figures

–

Metric	Value		As of	Source
–

Incident history

Disclosed 2026-09-29Updated 2026-10-22Hokkaido[Investigating][Severity: Critical][Breached][Critical]
Seicomart: unauthorized access to the Seicomart app
[Intrusion][Data leak][Service outage]Leaked 570KOrganizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2026-09-29	2026-10-22	Seicomart: unauthorized access to the Seicomart app	[Breached]	[Critical]	[Critical]	1 Seicomart Inc.	Hokkaido	[Intrusion]	[Data leak][Service outage]	570,000	[Investigating]