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.

767 results
Investigating

Fuji Yakuhin: Sagawa parcel-inquiry intrusion may have exposed mail-order customer data

Disclosed Oct 8, 2026. Linked to the Sep 30 intrusion into Sagawa’s parcel-inquiry service; shipper/recipient name, address and phone for Fuji official-store buyers in the prior 100 days (incl. subscriptions) may be in scope. Whether Fuji customers are actually included still under confirmation. Cards/passwords out of scope per Sagawa. No headcount. Sagawa root not yet registered (official body unread).

Confirmed

MrMax: app/online-store intrusion leaked member personal data

Suspicious server access on Oct 3, 2026; software feature abuse led to exfiltration of member ID/name/email/phone for up to 1,735,154 app/online-store members. Address/DOB/cards/passwords/purchase history not leaked. Disclosed Oct 6.

Investigating

Scala Communications: i-ask intrusion may have exposed enquiry data for up to 5 client tenants

Between ~20:30 Oct 2 and ~08:00 Oct 3, 2026, illicit admin login and malware on i-ask may have exfiltrated enquiry DBs for up to 5 client tenants on the same server. Blocked same morning; public notice Oct 6. Up to 713,126 enquiry-unit records (duplicates possible). Name/email/enquiry text etc.