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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
Imabari City: Arcadia intrusion may have exposed fire-mail and staff-assembly registrant data今治市InvestigatingUnknown2026-10-13
Waki Town: SpeeCAN RAIDEN vendor intrusion may have exposed about 1,000 disaster-mail registrations和木町InvestigatingUnknown2026-10-13
Yamaha Motor: Commune-hosted PAS Life may have exposed about 1,600 members’ dataヤマハ発動機InvestigatingUnknown2026-10-12
Future Design Shibuya: Commune-hosted community may have exposed 495 members’ data渋谷未来デザインInvestigating495 People2026-10-11
Panasonic: Commune-hosted LUMIX / Hair Sap communities leaked data on about 2,000 and about 3,000 membersパナソニックConfirmedUnknown2026-10-09
Suzuki: Commune-hosted Suzuki Village may have exposed about 3,000 members’ dataスズキInvestigatingUnknown2026-10-09
Calbee: Commune-hosted Zeppin-bu fan site member data was viewed/acquiredカルビーConfirmedUnknown2026-10-09
Softbrain: Commune-hosted e-Sales Manager community may have exposed 1,164 members’ dataソフトブレーンInvestigating1,164 People2026-10-09
PROGRIT: Commune-hosted ONE GRITTERS leaked data on about 2,300 membersプログリットConfirmedUnknown2026-10-09
LY Corporation: Commune-hosted DS.LAB may have exposed data on 1,750 usersLINEヤフーInvestigating1,750 People2026-10-09
Sansan: Commune-hosted User Forum confirmed leak for 1,325 members (8,687 more possible)SansanConfirmed1,325 People2026-10-09
Chitose Institute: Commune-hosted Chitose Academy may have exposed up to 843 members’ dataちとせ研究所InvestigatingUnknown2026-10-09
coconala: skill-market intrusion leaked 449 resumes and 1,845 career-document filesココナラConfirmedUnknown2026-10-09
dip Baitoru: member email addresses leaked via abuse of a design flaw (up to 3,885,771)ディップConfirmedUnknown2026-10-09
Commune Inc.: platform intrusion leaked data on about 307,000 membersコミューンConfirmedUnknown2026-10-09
LIXIL: Commune-hosted Sumai/Nyanpeki communities may have exposed member dataLIXILInvestigatingUnknown2026-10-09
Koikeya: Commune-hosted GOGO! Land leaked member data for up to 1,800 accounts湖池屋ConfirmedUnknown2026-10-09
Yamaha: Commune-hosted YNE community leaked data on about 1,600 membersヤマハConfirmedUnknown2026-10-09
Resorttrust: website intrusion leaked member and reservation personal dataリゾートトラストConfirmedUnknown2026-10-09
BOOKOFF: member data of 6,383,279 people leaked from member systemブックオフグループホールディングスConfirmed6,383,279 People2026-10-09