> JapanHacked_
[Contained][Severity: Critical][Credential abuse]

EPARK Relax & Esthe: unauthorized access to the PeakManager booking system

EPARK Relax & Esthe detected unauthorized access and deletion in its PeakManager booking/customer database on July 27 and disclosed possible exposure of about 33 million records on July 31. Its September 24 follow-up confirmed external transfer and deletion. Deduplication using phone/email details reduced the scope to about 22.18 million records, which cannot be converted reliably into unique people. Exposed fields included names, contacts, birth dates, gender and treatment notes, some containing health information. It corrected the initial exclusion of card data: five notes potentially contained expired card details, whose authenticity and accuracy were unverified. Encrypted passwords had also been included in the initial risk scope. Deleted data was restored; no impact on other systems or secondary misuse was confirmed.

Disclosed

2026-07-31

Organizations involved

1

Leaked or at risk

33M

33,000,000

Downtime

Unknown

Timeline

  1. Detected 2026-07-27
  2. Disclosed 2026-07-31
  3. 4 days

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセスによる個人情報漏えいの可能性に関するお知らせ(第一報)EPARK Relax & Esthe · 2026-07-31
  2. [2][News]EPARKリラク&エステの予約管理プラットフォーム「PeakManager」に不正アクセス、最大約3300万レコードが漏えいの可能性INTERNET Watch · 2026-08-03
  3. [3][Official]不正アクセスと個人情報漏えいに関するお知らせ(第二報)EPARK Relax & Esthe · 2026-09-24