SHINDO2

SintoWorld Co., Ltd.

www.sintoworld.jp

Unauthorized accessSize not disclosed

LEAK UNCLEARInvestigating

Open in the live monitor ▶
Disclosed
Jul 6, 2026
Leak
Unknown
Type
Unauthorized access
Status
Investigating
Security spend
Measures, no amount
Compensation
Not announced

What leaked

UnspecifiedPersonal information

Not leaked

  • Payment information (settlement data, etc.)

Who is affected

  • Online store users

Cause

A possible unauthorized access event by a third party was found (under investigation)

Timeline

  1. First disclosure

Response

  • Service stopped
  • Forensic investigation
  • Password reset
  • Phishing warning

Some functions restricted for safety; forensic investigation by an outside firm. Users asked to change reused passwords and beware of suspicious messages. Helpline (0965-31-6961, weekdays 9:30-17:00)

What you should do

  1. 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