[Contained][Severity: Critical][Intrusion]

Ryochi: server intrusion

An intrusion was detected on August 18. The first report identified up to 450,000 trade, loyalty-member and delivery entries, plus 47 bank-account entries and information on 7,518 staff. The November 12 final update said investigation completed September 30 found no evidence of leakage or misuse, while access could not be ruled out.

Disclosed

2025-09-02

Organizations involved

Leaked or at risk

450K

450,000

Downtime

Unknown

Timeline

Detected 2025-08-18
Disclosed 2025-09-02
15 days

Attack or cause

Method: [Intrusion]
Impact: [Data leak]
Entry point: Unknown

Data exposed or at risk

[Name][Postal address][Gender][Phone number][Date of birth][E-mail address][Bank account][Employment][Purchase history]

Organizations involved

[Breached][Critical]Kanagawa, Kawasaki, MiyamaeWholesale and retail trade450,000 leaked
Ryochi Inc.

						Note
Ryochi Inc.	[Breached]	[Critical]	Kanagawa, Kawasaki, Miyamae	Wholesale and retail trade	450,000

Open in organization search

Sources

[1][Official]不正アクセスによる企業情報及び個人情報の流出の可能性に関するお詫びとお知らせRyochi Inc. · 2025-09-02
[2][Official]当社サーバーに対する不正アクセスに関するお詫びとご報告（最終報・追加）Ryochi Inc. · 2025-11-12