SHINDO2
Oriental Diamond
RansomwareSize not disclosed
POSSIBLE LEAKPostal address / Phone numberRecovering
Open in the live monitor ▶- Disclosed
- May 12, 2026
- Detected
- May 4, 2026
- Detection to disclosure
- 8 days
- Leak
- Leak possible
- Type
- Ransomware
- Status
- Recovering
- Security spend
- Not checked yet
- Compensation
- Not announced
What leaked
IdentityName
ContactAddress, Phone number
Not leaked
- Bank account, credit card and My Number data are not included
Who is affected
- Customers and others (no detail in the article)
Cause
A third party exploited a VPN vulnerability and encrypted data on the head-office file server
Timeline
- Detected
- First disclosure
Response
- Service stopped
- MFA
- Blocked the entry point
- Staff training
Stopped using the VPN and strengthened authentication; restricted outside connections while rebuilding; staff training
What you should do
- Treat refund or apology calls and texts as scams. Call back only on the number from the official site
- Watch for unexpected mail or invoices; your address is hard to change
- Check the company's notice to see if you're affected
Lessons for companies
- Patch internet-facing servers, VPNs and admin panels first. Exploits follow disclosure within days
- Offline backups with restore drills; segment the network
- Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
- Run red teaming and AI-assisted hardening, and publish how much you invest
Sources
- Cybersecurity-jp.com News · May 29, 2026