SHINDO3

Nihon Plast

Nihon Plast Co., Ltd.

Unauthorized accessSize not disclosed

POSSIBLE LEAKPostal address / Phone numberContained

Open in the live monitor ▶
Disclosed
Oct 30, 2025
Detected
Aug 20, 2025
Detection to disclosure
71 days
Leak
Leak possible
Type
Unauthorized access
Status
Contained
Security spend
Not checked yet
Compensation
Not announced

What leaked

Business dataCompany name
Employment & HRDepartment
IdentityFull name
ContactPhone number, Email address, Address

Who is affected

  • Some business partner contacts
  • Product customers

Cause

Network equipment was accessed without authorization and a development center server was compromised

Timeline

  1. A system outage occurred and was found to be caused by a cyberattack
  2. Date of the Security NEXT report

Response

  • Notified individuals
  • More monitoring

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. Patch internet-facing servers, VPNs and admin panels first. Exploits follow disclosure within days
  2. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  3. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources