トラストバンク（ふるさとチョイス）Data breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- October 19, 2026
- Severity
- SCompromise of deep personal data or usable credentials.
- Scale
- Unknown
- Main impact
- ふるさとチョイス detected suspected unauthorized access and has temporarily suspended user-facing services to secure safety and prevent further spread of damage. Whether personal information was leaked is not yet clear.
- Information involved
- Not specified in the disclosure
- Cause / key point
- Cause under investigation.
- Industry
- IT & telecom
- Listing / capital
- UnlistedParent company: チェンジホールディングス(東証プライム 3962)
トラストバンク is a subsidiary of チェンジホールディングス.
- Sources
- Last updated
- October 20, 2026
Stock price reaction to the disclosureチェンジホールディングス・親会社 / 東証プライム 3962
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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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)
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