渋谷未来デザイン（渋谷未来デザイン COMMUNITY）Data breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- October 11, 2026
- Severity
- CLimited data such as email addresses and identifiers.
- Scale
- 495 people
- Main impact
- It was announced that due to unauthorized use of a Commune administrator account, the email addresses, nicknames, account names, and other information of 495 registered members may have been accessed.
- Information involved
- Email addressUser / member ID
- Cause / key point
- This was caused by the administrator account of a contractor being fraudulently used by a third party.About Supply chain attacks (via vendors & shared services)
- Industry
- Services & other
- Listing / capital
- Non-profit corporation
Presumed to be a private local organization.
- Last updated
- October 20, 2026
Is this incident worth paying attention to?
Written & reviewed
Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.
CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.
Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:
Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction
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Attack method classification: Supply chain attacks (via vendors & shared services)(Compromising the provider instead of the user)
Read the Supply chain attacks (via vendors & shared services) guide and national trends →