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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
Nittai Kogyo N-Trading: 3,887 member records may have leaked after site intrusionニッタイ工業Investigating3,887 Records2026-02-09
Saison Technology: 1,214 support renewal forms may have been publicly readable due to cloud-storage misconfigurationセゾンテクノロジーInvestigating1,214 Records2026-02-09
Fukuda Lifetec Tokyo: patient data of 550 people leaked via misdirected delivery notesフクダライフテック東京Confirmed550 People2026-02-09
Beauty Garage: card and customer data may have leaked after EC-site intrusion concernビューティガレージInvestigatingUnknown2026-02-06
At Home reports possible leak from moving-estimate management systemアットホーム株式会社InvestigatingUnknown2026-02-05
Anabuki Kosan: customer, candidate and employee personal data may have leaked after ransomware穴吹興産InvestigatingUnknown2026-02-04
CyberAgent Dotmoney: other-account data may have been shown due to a settings error (up to 18,936)サイバーエージェントInvestigatingUnknown2026-02-04
Anabuki Housing Service: personal data of 207,773 people leaked after ransomware穴吹ハウジングサービスConfirmed207,773 People2026-02-03
Osaka Kyoiku University: 2,376 student email addresses leaked via misaddressed bulk mail大阪教育大学Confirmed2,376 Records2026-02-02
Integral: contact-form personal data may have leaked after website intrusionインテグラルInvestigatingUnknown2026-01-30
JA Kyosai: misconfiguration briefly exposed other JA policyholder data to administratorsJA共済連ConfirmedUnknown2026-01-27
SoftBank: proxy bug caused 2,019 My SoftBank wrong-profile displays and related MMS faultsソフトバンクConfirmed2,019 Records2026-01-27
GOT: reader-survey names and addresses may have leaked after web-server intrusionジーオーティーInvestigatingUnknown2026-01-26
Intellex Just Curtain: 60,663 personal-data and 10,423 card records may have leaked after intrusionインテリックスInvestigating60,663 People2026-01-26
Ebara Foods Ebara CLUB: other members’ registration data may have been shown (up to 557)エバラ食品工業InvestigatingUnknown2026-01-23
MAFF: My Number and payroll data of 4,571 staff and family members leaked via misdirected email農林水産省Confirmed4,571 People2026-01-23
Kashiwa City: personal data in a limited-access page may have leaked after search-engine indexing柏市InvestigatingUnknown2026-01-23
cocoloni: member emails and hashed passwords leaked after intrusioncocoloniConfirmedUnknown2026-01-21
Aoyama Main Kikaku: property-related personal data may have leaked after ransomware青山メイン企画InvestigatingUnknown2026-01-16
Bonform online store: card data of 3,268 customers may have leaked after intrusionボンフォームInvestigating3,268 People2026-01-16