Shinryo: cyberattack causes a system outage
On 17 October, unauthorized access caused a system outage at Shinryo, an HVAC and plumbing contractor, and the investigation found it was a cyberattack. Some services it provides were affected, and it contacted affected customers and partners individually. As of 21 October, no leak of personal or customer data had been found.
Disclosed
2026-10-21
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Started, Detected 2026-10-17
- Disclosed 2026-10-21
- 4 days
Attack or cause
- Method
- [Intrusion]
- Impact
- [Service outage]
- Entry point
- Unknown
Data exposed or at risk
–
Organizations involved
[Breached][Moderate]Tokyo, ShinjukuConstruction
Shinryo Corporation
Sources
- [1][Official]サイバー攻撃によるシステム障害発生についてShinryo · 2026-10-21