SHINDO2

Mandarake

Mandarake Inc.

Unauthorized accessSize not disclosed

POSSIBLE LEAKPostal address / Phone numberInvestigating

Open in the live monitor ▶
Disclosed
Aug 30, 2026
Detected
Aug 27, 2026 23:00 JST
Detection to disclosure
3 days
Leak
Leak possible
Type
Unauthorized access
Status
Investigating
Security spend
Measures, no amount
Compensation
Not announced

What leaked

IdentityFull name
ContactAddress, Phone number, Email address

Not leaked

  • Credit card data is not retained, so none is held
  • Member account passwords

Who is affected

  • Customers who ordered by 06:00 on Friday August 28, 2026

Cause

Unauthorized access to the company's server; the entry point has not been disclosed

Timeline

  1. Detected
  2. Online shop suspended and the Grand Auction event postponed
  3. First report
  4. Reported to authority
  5. Reported to authority
  6. Interim report: the investigation found no trace of personal data being viewed or taken

Response

  • Service stopped

Suspended the online shop and postponed the auction event

What you should do

  1. Don't open links in emails from this company. The apology email itself may be fake
  2. Treat refund or apology calls and texts as scams. Call back only on the number from the official site
  3. Watch for unexpected mail or invoices; your address is hard to change
  4. 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