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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
Park24 Times Car: member data leaked after intrusion; ID-document images of about 1.6 million accountsパーク24ConfirmedUnknown2026-09-25
Fines: reservation-system intrusion leaked 1,536,322 reservation recordsファインズConfirmed1,536,322 Records2026-09-25
Kotoura Town: contractor mis-stored personal data on 828 residents into another municipality’s area琴浦町Confirmed828 People2026-09-25
Smaregi: EC admin-login vulnerability may have let attackers view/obtain personal data in some merchant environmentsスマレジInvestigatingUnknown2026-09-25
Aichi Pref.: mis-attached private file on Aicon Navi exposed personal data on 599 people愛知県Confirmed599 People2026-09-21
Tokorozawa City: ApplyNow intrusion leaked 1,701 staff-exam entrants’ personal records所沢市Confirmed1,701 Records2026-09-19
JGC Digital: Metabase vulnerability abuse led to theft of Azas and Suloop registrant dataJGC DigitalConfirmedUnknown2026-09-18
PFU: Shopserve intrusion leaked legacy PFU Direct store customers’ personal dataPFUConfirmedUnknown2026-09-18
Kashihara City: ApplyNow video-screening intrusion may have exposed FY2020 applicants’ data橿原市InvestigatingUnknown2026-09-18
Iruma City: ApplyNow intrusion leaked 1,276 staff-exam entrants’ personal records入間市Confirmed1,276 Records2026-09-17
Chibagin Shoten: corporate-site server intrusion may have exposed customer personal dataちばぎん商店InvestigatingUnknown2026-09-17
Ichinomiya City: ApplyNow interview-system intrusion may have exposed exam registrants’ data一宮市InvestigatingUnknown2026-09-17
Chiba Bank: subsidiary Chibagin Shoten site intrusion may have exposed bank customers’ data千葉銀行InvestigatingUnknown2026-09-17
Daiko Printing PhotoGoods: card and personal data may have leaked after intrusion大興印刷InvestigatingUnknown2026-09-16
GMO GlobalSign: Trust Login storage misconfiguration let third parties obtain data on 45,030 peopleGMOグローバルサインConfirmed45,030 People2026-09-16
Gyazo account data and image metadata exposed; images of 133 users also acquired株式会社HelpfeelConfirmedUnknown2026-09-16
Ainokaze Toyama Railway: seat-management intrusion may have exposed 1,409 passengers’ personal dataあいの風とやま鉄道Investigating1,409 People2026-09-15
Osaka City: recording-interview vendor intrusion leaked 106 exam applicants’ personal data大阪市Confirmed106 People2026-09-15
Shimada City: ApplyNow intrusion leaked 113 FY2022 staff-exam applicants’ personal records島田市Confirmed113 Records2026-09-15
LEAN BODY: Metabase intrusion led to theft of data on about 440,000 customer accountsLEAN BODYConfirmedUnknown2026-09-15