SHINDO2

Sagawa Express

Sagawa Express Co., Ltd.

sagawa-exp.co.jp

Unauthorized accessSize not disclosed

POSSIBLE LEAKPostal address / Phone numberInvestigating

Open in the live monitor ▶
Disclosed
Sep 30, 2026
Detected
Sep 30, 2026
Detection to disclosure
Same day
Leak
Leak possible
Type
Unauthorized access
Status
Investigating
Security spend
Measures, no amount
Compensation
Not announced
Corporate number
8130001000053

What leaked

IdentitySender and recipient names, Contract customers' names, addresses, phone numbers, Smart Club members' names, addresses, phone numbers, email addresses, member IDs
ContactAddress, Phone number, Contract customers' names, addresses, phone numbers, Contract customers' names, addresses, phone numbers, Smart Club members' names, addresses, phone numbers, email addresses, member IDs, Smart Club members' names, addresses, phone numbers, email addresses, member IDs, Smart Club members' names, addresses, phone numbers, email addresses, member IDs
Business dataCorporate customer company names and contact names, Corporate customer company names and contact names
Account dataSmart Club members' names, addresses, phone numbers, email addresses, member IDs

Who is affected

  • Shippers
  • Recipients
  • Contract customers
  • Smart Club members

Cause

Unauthorized access by a third party (method and cause under investigation)

Timeline

  1. Detected
  2. First disclosure
  3. Some web services suspended
  4. Company issued an update

Response

  • Hotline
  • Phishing warning
  • Service stopped

Dedicated call center set up on 2026-10-01; warnings about suspicious contacts

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. You can be affected without ever using this service (parcel recipients etc.). Check any notice you receive
  5. 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