資生堂Data breach / unauthorized access incident
- Occurred on
- October 27, 2026
- Announced on
- November 6, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- 2,515 records
- Main impact
- The system for skin-measurement services, including the official online store, was accessed without authorization, resulting in the exposure of personal data for 2515 users such as names, email addresses, ages, genders, questionnaire data and skin measurement results.
- Information involved
- Email addressFull nameHealth & medical data
- Cause / key point
- Intrusion into the system via unauthorized access
- Industry
- Retail & e-commerce
- Listing / capital
- Listed company4911
- Sources
- Last updated
- November 7, 2026
Stock price reaction to the disclosure資生堂 4911
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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)
Read the Unauthorized access (method undisclosed) guide and national trends →