Company

DOCOMO SMTB Net Bank, Inc.

DOCOMO SMTB Net Bank, Inc. (Minato, Tokyo; Finance and insurance) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-11-05.

Profile

Industry/type

Finance and insurance

Location

Tokyo, Minato

Also known as

Docomo SMTB Net Bank

Services

DOCOMO SMTB Net Bank card loan

Website

https://www.netbk.co.jp/

Public figures

–

Metric	Value	Scope	As of	Source
–

Incident history

Disclosed 2026-11-05Updated 2026-11-06 00:00Aichi, Ehime, Fukuoka, Gifu, Hiroshima, Hokkaido, Ibaraki, Kumamoto, Nagasaki, Niigata, Okayama, Tokyo, Wakayama, Yamagata[Investigating][Severity: Critical][Through a supplier][Critical]
SMBC Consumer Finance: guarantee system breach leaks income and licence numbers of up to 320,000 people
[Intrusion][Data leak][Service outage]Leaked 320.1KOrganizations 15

		Incident	Role	Impact level				Methods	Impacts		Status
2026-11-05	2026-11-06 00:00	SMBC Consumer Finance: guarantee system breach leaks income and licence numbers of up to 320,000 people	[Through a supplier]	[Critical]	[Critical]	15 DOCOMO SMTB Net Bank, Inc., SMBC Consumer Finance Co., Ltd., The Chugoku Bank, Limited, Aichi Bank, Ltd., The Bank of Fukuoka, Ltd., Daishi Hokuetsu Bank, Ltd., The Ehime Bank, Ltd., The Hiroshima Bank, Ltd., The Juhachi-Shinwa Bank, Ltd., The Kiyo Bank, Ltd., The Kumamoto Bank, Ltd., North Pacific Bank, Ltd., The Ogaki Kyoritsu Bank, Ltd., The Shonai Bank, Ltd., Tsukuba Bank, Ltd.	Aichi, Ehime, Fukuoka, Gifu, Hiroshima, Hokkaido, Ibaraki, Kumamoto, Nagasaki, Niigata, Okayama, Tokyo, Wakayama, Yamagata	[Intrusion]	[Data leak][Service outage]	320,118	[Investigating]