SHINDO4

Isabou-net

Godai Kaihatsu Corporation

Unauthorized accessSize not disclosed

POSSIBLE LEAKPassword / Postal addressContained

Open in the live monitor ▶
Disclosed
Aug 10, 2026
Detected
Jan 26, 2026
Detection to disclosure
196 days
Leak
Leak possible
Type
Unauthorized access
Status
Contained
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityFull name
ContactEmail address, Address, Phone number
CredentialsLogin password
Business dataCompany name

Who is affected

  • Members who used the service

Cause

Unauthorized access by a third party

Timeline

  1. Unauthorized access detected; server stopped and isolated from the network
  2. First disclosure

Response

  • Blocked the entry point
  • Config review
  • Governance / committee

Stopped and isolated the server; reviewed security and management; moved to a new environment

What you should do

  1. Change this password and every account that reused it now. Switch to a passkey where offered
  2. Don't open links in emails from this company. The apology email itself may be fake
  3. Treat refund or apology calls and texts as scams. Call back only on the number from the official site
  4. Watch for unexpected mail or invoices; your address is hard to change
  5. Check the company's notice to see if you're affected

Lessons for companies

  1. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  2. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources