> JapanHacked_Cybersecurity incidents in Japan

Company

Sansan, Inc.

Sansan, Inc. (Shibuya, Tokyo; Information and communications) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-09.

Profile

Industry/type: Information and communications
Location: Tokyo, Shibuya
Listing: TSE Prime 4443
Website: https://jp.corp-sansan.com/

Public figures

Employees2,077Non-consolidated2026-05-31
METI: Gビズインフォ
Revenue¥51.6BNon-consolidated2026-05-31
METI: Gビズインフォ
Capital¥7.4BNon-consolidated2026-05-31
METI: Gビズインフォ

Metric	Value		As of	Source
Employees	2,077	Non-consolidated	2026-05-31	METI: Gビズインフォ
Revenue	¥51.6B	Non-consolidated	2026-05-31	METI: Gビズインフォ
Capital	¥7.4B	Non-consolidated	2026-05-31	METI: Gビズインフォ

Incident history

Disclosed 2026-10-09Updated 2026-10-26 18:29Aomori, Hiroshima, Osaka, Shizuoka, Tokyo[Investigating][Severity: Critical][Through a supplier][Major]
Commune: unauthorized access to the Commune community platform
[Intrusion][Data leak]Leaked 307KOrganizations 12

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-09	2026-10-26 18:29	Commune: unauthorized access to the Commune community platform	[Through a supplier]	[Major]	[Critical]	12 Commune Inc., Aomori Prefectural Government, LY Corporation, Mazda Motor Corporation, Panasonic Corporation, Suzuki Motor Corporation, Yamaha Motor Co., Ltd., Bandai Namco Experience Inc., Koike-ya Inc., Morinaga Milk Industry Co., Ltd., Sansan, Inc., Yamaha Corporation	Aomori, Hiroshima, Osaka, Shizuoka, Tokyo	[Intrusion]	[Data leak]	307,000	[Investigating]