Investigating

EDION: customer data may have leaked after intrusion into e-commerce site log storage

On November 5, 2026, EDION found unauthorised access to e-commerce log storage and announced on November 6 that some customer data recorded in those logs may have leaked. No access to the customer database itself was confirmed.

Last updated: 2026-11-09

Overview

Linked-log records cover up to 4,131 people and order-linked logs up to 9,554; overlap means fewer than 13,685 in total (upper bounds, count blank). Names, emails, phones, addresses and customer numbers may be involved; card numbers and login passwords are not.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Blocked the traffic, hardened access controls, reported to the PPC and kept the site running after an external security review.

What you can do

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

Sources

  1. 当社ECサイトへの不正アクセスによる個人情報漏洩の可能性に関するお詫びとお知らせ株式会社エディオン · 2026-11-09

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