Investigating

COVER: Hololive OCG site CMS intrusion may have exposed inquiry-form personal data

After a CMS vulnerability disclosure, intrusion traces were found on the Hololive OCG site. Inquiry-form name/email/phone/content from July 4–19, 2026 may have been obtained; disclosed Aug 25. No confirmed defacement or proven exfiltration. Card-exchange desk out of scope.

Last updated: 2026-11-09

Overview

No published headcount (blank).

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. 「hololive OFFICIAL CARD GAME」公式サイトヘの不正アクセスのおそれに関するお知らせカバー株式会社 · 2026-11-09

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