SHINDO4

REVEX

NAKABAYASHI CO., LTD.

Inquiry form users3,631records

POSSIBLE LEAKPostal address / Phone numberUnauthorized access · Investigating

Open in the live monitor ▶
Disclosed
Jul 28, 2026
Detected
Jun 30, 2026
Detection to disclosure
28 days
Leak
Leak possible
Type
Unauthorized access
Status
Investigating
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityFull name
ContactEmail address, Address (38 records), Phone number (38 + 25 records)

How many

  • Inquiry form users 3,631 records

Who is affected

  • Customers who used the inquiry form during the period

Cause

The product introduction site was compromised by a third party

Timeline

  1. Start of the affected period
  2. Inquiry from a customer
  3. Evidence of compromise confirmed
  4. Exposure ended
  5. Date of the Security NEXT report

Response

  • Forensic investigation
  • Notified individuals

Forensic investigation with outside help; individual contact with affected customers

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