Overview
Possible access to names, addresses, phones and emails of owners, landlords, tenants, emergency contacts, guarantors, partners and staff, plus some ID-document copies. No card data. No count (count blank).
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
- ランサムウェア被害に伴う個人情報のき損及び漏えいに関するお知らせ（第３報）株式会社青山メイン企画 · 2026-11-09
- ランサムウェア被害に伴う個人情報のき損及び漏えいに関するお知らせ（第２報）株式会社青山メイン企画 · 2026-11-09
- ランサムウェア被害に伴う個人情報のき損及び漏えいのおそれに関するお知らせ株式会社青山メイン企画 · 2026-11-09