Confirmed

BANDAI SPIRITS: 346,247 THE GUNDAM BASE MEMBERS email addresses leaked via Ymir Link breach

Bandai Namco Entertainment and BANDAI SPIRITS announced on October 27 that THE GUNDAM BASE MEMBERS email addresses leaked through the breach of Ymir Link, the Bandai Namco ID email contractor.

Last updated: 2026-11-09

Overview

346,247 email addresses with internal ID identifiers; no names, addresses, purchase history, passwords or card data. This stems from the Ymir Link Cuenote intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

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. ユミルリンク株式会社で発生した不正アクセスに伴うメールアドレス等の漏えいに関するお詫びとお知らせ株式会社バンダイナムコエンターテインメント・株式会社BANDAI SPIRITS · 2026-11-09

Related information

ymir-link-cuenote-fc-data-exfiltration-2026

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