Skip to content
JAENES
SLeak confirmedSeptember 24, 2026 announced

EPARKリラク&エステ（PeakManager）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
Unconfirmed
Announced on
September 24, 2026
Severity
SCompromise of deep personal data or usable credentials.
Scale
22,180,000 records
Main impact
A customer information database of approximately 2,218万 records was transferred externally (the number of individuals affected has not been disclosed). It includes names, contact details, dates of birth, etc., and the remarks field may contain health information and other sensitive data.
Information involved
Email addressPhone numberHome addressFull nameDate of birthHealth & medical data
Cause / key point
The cause is under investigation.
Industry
Services & other
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
Email addressPhone numberHome addressFull nameDate of birthHealth & medical dataHow severity is assessed →

Is this incident worth paying attention to?

Written & reviewed

笹尾 祐太朗の写真

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

Related incidents

Browse the database →

Incidents sharing the same company, service, attack method or industry (grouped automatically from the disclosures).

Same industry

Attack method classification: Under investigation / not stated(Cause not disclosed)

Read the Under investigation / not stated guide and national trends →

← Back to Breach Watch