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.
| Title / subject | Organizations | Verification | Reported impact | Disclosed |
|---|---|---|---|---|
| coastline: member names and phones leaked after intrusion into Smaregi marketplace app | coastline | Confirmed | 136,346 Records | 2026-01-13 |
| Canvass: user data may have leaked after ransomware on My Page server | カンバス | Investigating | Unknown | 2026-01-09 |
| Yotsukaido crime-prevention association: roster data may have leaked after support-scam remote access | 四街道市防犯協会 | Investigating | Unknown | 2026-01-09 |
| Okinawa Prefectural College of Nursing: student data may have leaked after academic-system ransomware | 沖縄県立看護大学 | Investigating | Unknown | 2026-01-08 |
| Yokosuka CCI: 552 Hitobito Miura member email addresses exposed in misaddressed mail | 横須賀商工会議所 | Confirmed | 552 Records | 2026-01-07 |
| Tokyo Metropolitan University reports possible personal-data leak via faculty Google account | 東京都立大学 | Investigating | Unknown | 2026-01-07 |
| CAC Academic Support Navi: applicant personal data may have leaked after intrusion | シーエーシー | Investigating | Unknown | 2026-01-05 |