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Organizations in Japan involved in cyberattacks and data leaks. Filter by location, industry or type, size and incident involved.
Organizations involved in this incident2026-11-05SMBC Consumer Finance: guarantee system breach leaks income and licence numbers of up to 320,000 peopleOpen the incident
15 results
CompanyFinance and insuranceTokyo, Minato[Through a supplier][Critical]
DOCOMO SMTB Net Bank, Inc.Incidents 1Latest 2026-11-05
CompanyFinance and insuranceTokyo, Koto[Breached][Critical]
SMBC Consumer Finance Co., Ltd.Incidents 1Latest 2026-11-05
CompanyFinance and insuranceOkayama, Okayama, Kita[Through a supplier][Major]
The Chugoku Bank, LimitedIncidents 2Latest 2026-11-05Employees 2,617
CompanyFinance and insuranceAichi, Nagoya, Naka[Through a supplier][Major]
Aichi Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceFukuoka, Fukuoka, Chuo[Through a supplier][Major]
The Bank of Fukuoka, Ltd.Incidents 3Latest 2026-11-05
CompanyFinance and insuranceNiigata, Niigata, Chuo[Through a supplier][Major]
Daishi Hokuetsu Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceEhime, Matsuyama[Through a supplier][Major]
The Ehime Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceHiroshima, Hiroshima, Naka[Through a supplier][Major]
The Hiroshima Bank, Ltd.Incidents 3Latest 2026-11-05
CompanyFinance and insuranceNagasaki, Nagasaki[Through a supplier][Major]
The Juhachi-Shinwa Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceWakayama, Wakayama[Through a supplier][Major]
The Kiyo Bank, Ltd.Incidents 1Latest 2026-11-05
CompanyFinance and insuranceKumamoto, Kumamoto, Chuo[Through a supplier][Major]
The Kumamoto Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceHokkaido, Sapporo, Chuo[Through a supplier][Major]
North Pacific Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceGifu, Ogaki[Through a supplier][Major]
The Ogaki Kyoritsu Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceYamagata, Yamagata[Through a supplier][Major]
The Shonai Bank, Ltd.Incidents 2Latest 2026-11-05
CompanyFinance and insuranceIbaraki, Tsuchiura[Through a supplier][Major]
Tsukuba Bank, Ltd.Incidents 2Latest 2026-11-05