東北電力フロンティア（イベント問い合わせフォーム）Data breach / unauthorized access incident
- Occurred on
- September 30, 2026
- Announced on
- October 17, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- 182 records
- Main impact
- Following unauthorized access to Studio, inquiry information from five event-related sites totaling 182 records may have been leaked externally. Electricity/optical line contract information and actual participant information are excluded, and actual exfiltration has not been confirmed.
- Information involved
- Email addressPhone numberFull name
- Cause / key point
- A third party exploited a vulnerability in some functions of Studio. Studio says the vulnerability has been fixed and the access route blocked, and 東北電力フロンティア has closed the inquiry forms for キャンプフロンティア and MusuBiz.About Exploitation of vulnerabilities
- Industry
- Services & other
- Listing / capital
- UnlistedParent company: 東北電力(東証プライム 9506)
東北電力フロンティア is a subsidiary of 東北電力.
- Last updated
- October 20, 2026
Stock price reaction to the disclosure東北電力・親会社 / 東証プライム 9506
Stock information is reference data based on Yahoo Finance and may be delayed. This site does not solicit or advise investment and does not guarantee the accuracy or completeness of this information. We accept no liability for any investment decision based on it.
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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: Exploitation of vulnerabilities(Breaking in through holes in software and devices)
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