SHINDO4

Rockin'on Japan

Business contact records~1,000records

LEAK CONFIRMEDPostal address / Phone numberInsider misuse · Closed (final report)

Open in the live monitor ▶
Disclosed
May 26, 2026
Detected
Mar 23, 2026
Detection to disclosure
64 days
Leak
Leak confirmed
Type
Insider misuse
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityName
Business dataOrganization name
Employment & HRDepartment
ContactPhone number, Email address, Address

How many

  • Business contact records ~1,000 records

Who is affected

  • Business partners

Cause

The former employee downloaded many files from the business cloud and copied them to personal external devices and a USB stick

Timeline

  1. Data taken on the last day of work
  2. Confirmed from PC operation logs
  3. First disclosure

Response

  • Access review

The former employee admitted it in an interview on 26 March; lawyers consulted

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