Miura: network intrusion
An August 14 intrusion through an overseas group company disrupted some services. August's notice identified 161,383 trade entries and 5,537 individual-customer shipping entries, among other datasets, as potentially exposed; these are records, not people. The May 2026 final report identified leakage or possible leakage of 5,021 group-staff records, including business contacts and passwords. No secondary harm was confirmed.
Disclosed
2025-08-15
Organizations involved
1
Leaked or at risk
161.4K
161,383
Downtime
Unknown
Timeline
- Detected 2025-08-14
- Disclosed 2025-08-15
- 1 days
Attack or cause
- Method
- [Intrusion][Credential abuse]
- Impact
- [Service outage][Data leak]
- Entry point
- Unknown
Data exposed or at risk
Organizations involved
[Breached][Critical]Ehime, MatsuyamaManufacturing161,383 leaked
Miura Co., Ltd.
Sources
- [1][Official]当社ネットワークへの不正アクセスによるシステム障害についてMiura Co., Ltd. · 2025-08-15
- [2][Official]当社ネットワークへの不正アクセスによるシステム障害について(続報)Miura Co., Ltd. · 2025-08-26
- [3][Official]当社ネットワークへの不正アクセスによるシステム障害について(最終報)Miura Co., Ltd. · 2026-05-18