Healing Paper（Unni）Data breach / unauthorized access incident
- Occurred on
- September 4, 2026
- Announced on
- September 10, 2026
- Severity
- SSLarge-scale compromise of sensitive data such as payment or identity-verification records affecting millions.
- Scale
- 219,665 people
- Main impact
- Unauthorized access to the consultation-history query API of cosmetic medical service 「Unni」 was reported, affecting 219,665 people worldwide; of these, 約4.8万名 were Japanese users, and records may include items such as desired surgery/procedure information.
- Information involved
- Email addressUser / member IDCard & payment dataPhone numberFull nameDate of birthHealth & medical data
- Cause / key point
- Cause under investigation.
- Industry
- Healthcare
- Listing / capital
- Unlisted
- Sources
- 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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)
Read the Unauthorized access (method undisclosed) guide and national trends →