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Japan: Data Breach Incidents by Country / region

Search incidents by company, country, industry, year and attack method. Review affected data, impact, verification status, company responses and sources.

Country / region: JapanReset
767 results
CardsTable
Title / subjectOrganizationsVerificationReported impactDisclosed
Enecom: internal-network intrusion may have exfiltrated files that include customer dataエネコムInvestigatingUnknown2026-10-09
JMAM: Commune-hosted Toki Labo leaked personal data on 2,950 members日本能率協会マネジメントセンターConfirmed2,950 People2026-10-09
Unifa: Commune-hosted Lookmee Room may have exposed data on 1,450 membersユニファInvestigating1,450 People2026-10-09
Kissei Shoji: intrusion may have exposed data including sensitive personal informationキッセイ商事InvestigatingUnknown2026-10-09
Doppuri Kochi: Commune-hosted “Kochi no Chi” leaked data on 358 membersどっぷり高知旅キャンペーン推進委員会Confirmed358 People2026-10-09
ZENB JAPAN: Commune-hosted ZENB GARDEN leaked data on 897 membersZENB JAPANConfirmed897 People2026-10-09
Morinaga Milk: Commune-hosted Mount Cafe club may have exposed 291 members’ data森永乳業InvestigatingUnknown2026-10-09
BASE FOOD: Commune-hosted Labo community may have exposed about 1,500 members’ dataベースフードInvestigatingUnknown2026-10-09
Bandai Namco Experience: Wangan arcade portal (Commune) may have exposed 1,694 members’ dataバンダイナムコエクスペリエンスInvestigating1,694 People2026-10-09
Uonuma City: ApplyNow staff-exam service leaked 86 applicant and 30 staff-admin records魚沼市ConfirmedUnknown2026-10-09
hi-ho: 38,809 contract-unit mypage logins via social-engineered credentials viewed customer dataハイホーConfirmed38,809 Records2026-10-08
Daiichi Kosho: vendor NCG malware may have exposed about 8.72M customer/employee records第一興商InvestigatingUnknown2026-10-08
VALX: Commune vendor intrusion may have exposed VALX FUN community member dataVALXInvestigatingUnknown2026-10-08
ORIX Life: Scala i-ask intrusion may have exposed about 26,500 enquiry recordsオリックス生命InvestigatingUnknown2026-10-08
Aomori Pref.: intrusion into “Aomori Biiki” fan community may have exposed member data青森県InvestigatingUnknown2026-10-08
Lawson: personal data leaked via Lawson ID and app-reservation intrusions (2,155,345 Lawson ID records)ローソンConfirmed2,155,345 Records2026-10-08
Otemae Hospital: mailbox compromise may have exposed staff personal data大手前病院InvestigatingUnknown2026-10-08
WingArc1st: Commune-hosted nest Portal had 1,200 members’ data illicitly viewedウイングアーク１ｓｔConfirmed1,200 People2026-10-08
Uzabase: admin-tool intrusion may have exposed NewsPicks customer personal dataユーザベースInvestigatingUnknown2026-10-08
Adventure (skyticket): multi-path intrusion leaked customer personal dataアドベンチャーConfirmedUnknown2026-10-08