Overview
The notice gives "about 110,000" (count blank). This stems from the Rakus Light Cloud Blastmail intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.
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
- 【重要】メール配信システムへの不正アクセスによるお客様情報の漏えいに関するお詫びとお知らせ株式会社メディアナビ · 2026-11-09