Sanshodo: ransomware attack
An intrusion and ransomware were identified early on May 15, prompting server shutdowns and network isolation. Ordering and logistics were affected. The May 22 update described gradual recovery and continued investigation of personal data, with no confirmed external leakage or published count or fields. The June 13 findings confirmed compromised accounts and encryption but no direct traces of customer or partner data exfiltration. Affected servers were disconnected and backups restored in a separate operational environment.
Disclosed
2025-05-15
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Detected, Disclosed 2025-05-15
- 1 days
Attack or cause
- Method
- [Ransomware]
- Impact
- [Service outage]
- Entry point
- Unknown
Data exposed or at risk
–
Organizations involved
[Breached][Critical]Kyoto, Kyoto, MinamiWholesale and retail trade
Sanshodo Inc.
Sources
- [1][Official]弊社ネットワークへの不正アクセスに関するお知らせSanshodo Inc. · 2025-05-15
- [2][Official]不正アクセス被害の対応状況についてSanshodo Inc. · 2025-05-22
- [3][Official]弊社ネットワークへの不正アクセスに関する調査結果のご報告Sanshodo · 2025-06-13