Overview
750 people.
Timeline
- Occurred
- Discovered
- 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
- 外部委託先への不正アクセスによる「コトダマン」公式コミュニティの一部会員情報漏えいに関するお知らせとお詫び株式会社MIXI · 2026-11-09