> JapanHacked_
[Investigating][Severity: Major][Unknown]

Generic Seiyaku: unauthorized access to its delivery contractor warehouse system may have leaked customer names, addresses and purchase details

The warehouse management system used by Generic Seiyaku's delivery contractor was accessed without authorization, and customer data has probably leaked.

Disclosed

2026-10-28

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. After the system provider told it, the company stopped its link to the system. [1]

  2. The company disclosed that customer data has probably leaked. [1]

Impact

  • All customers shipped to by [1]
  • Names, addresses, phone numbers, emails, purchase details and more [1]
  • No leak of passwords or card numbers is confirmed. [1]
  • The number of people is not published. [1]

Timeline

  1. Detected 2026-10-23
  2. Disclosed 2026-10-28
  3. 5 days

Attack or cause

Method
[Unknown]
Impact
[Data leak]
Entry point
Supplier

Data exposed or at risk

[Name][Gender][Phone number][E-mail address][Postal address][Date of birth][Purchase history]

Supply chain

[Breached]

Organizations listed on this site
1

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][Official]当社の委託する配送事業者が利用するシステムへの不正アクセスによるお客様情報漏えいのおそれに関するお詫びとお知らせGeneric Seiyaku · 2026-10-28