SHINDO4

DAISO

Daiso Industries Co., Ltd.

Personal data4,008records

EXPOSEDBank account / Postal addressMisconfiguration · Contained

Open in the live monitor ▶
Disclosed
Jun 18, 2025
Leak
Exposed, access unknown
Type
Misconfiguration
Status
Contained
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityFull name
ContactAddress, Phone number, Email address
Financial & paymentBank account details (49 records)
Business dataBusiness partner company name, Contact person name
Employment & HRDepartment, Job title
Communications & contentSome emails exchanged with the company

How many

  • E-commerce site users' names, addresses, phone numbers and email addresses 4,008 records
  • Business partner records (company and contact names, etc.) 4,578 records
  • Records including bank account details 49 records

Who is affected

  • E-commerce site users
  • Business partners
  • Mid-career job applicants
  • Employees

Cause

57 Google Groups used for business were set to public when viewing should have been limited to registered members. Found after an outside party pointed it out

Timeline

  1. Exposure began
  2. Exposure ended
  3. Date of the Security NEXT report

What you should do

  1. Scammers who know your account number pose as refund staff. No bank or company asks for your PIN
  2. Don't open links in emails from this company. The apology email itself may be fake
  3. Treat refund or apology calls and texts as scams. Call back only on the number from the official site
  4. Watch for unexpected mail or invoices; your address is hard to change
  5. Expect targeted phishing posing as HR or interview contacts
  6. Check the company's notice to see if you're affected

Lessons for companies

  1. Two-person review and pre-release tests for sharing and cache changes; monitor cloud config (CSPM)
  2. Don't keep ID or bank data: delete after checks or use a KYC provider
  3. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  4. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources