メディアリンク（Studio問い合わせフォーム）Data breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- October 19, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- 901 records
- Main impact
- It was announced that, following unauthorized access to メディアリンク's Studio, a total of 901 inquiry records submitted via the contact forms of four services may have been leaked. The count includes duplicate submissions.
- Information involved
- Email addressPhone numberFull name
- Cause / key point
- Possible external acquisition due to unauthorized access to Studio.
- Industry
- Media & entertainment
- Listing / capital
- Unlisted
- 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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Incidents related to "フォーム"
Incidents where the damage spread through the same service or system.
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Same attack method
- SSソースネクスト2026.10.15 announced・Affected 22,519,960 records
- SSバーガーキング・ジャパン(公式アプリ)2026.10.15 announced・Affected 11,180,000 records
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- Bユミルリンク（メール配信システム）2026.10.19 announced・Affected 9,000,000 records
- SSタイムズカー(タイムズモビリティ)2026.09.25 announced・Affected 6,600,000 accounts
- Sブックオフグループ(ブックオフコーポレーション)2026.10.09 announced・Affected 6,383,279 people
Same industry
- Sクリプトン（SONICWIRE・D2R）2026.10.19 announced・Affected 420,000 records
- SNTTソルマーレ（コミックシーモア）2026.10.15 announced・Affected Unknown
- S日本経済新聞社2026.10.04 announced・Affected 1,646 people
- SCINRA, Inc.2026.08.27 announced・Affected 21,508 people
- Sユニバーサル ミュージック2026.05.18 announced・Affected 3,100,000 records
- Sメディカ出版2026.05.13 announced・Affected 641,000 people
Attack method classification: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)
Read the Unauthorized access (method undisclosed) guide and national trends →