株式会社フューチャーショップ（futureshop）Data breach / unauthorized access incident
- Occurred on
- October 17, 2026
- Announced on
- October 23, 2026
- Severity
- SSLarge-scale compromise of sensitive data such as payment or identity-verification records affecting millions.
- Scale
- 3,147,469 records
- Main impact
- Member data from one store using an e-commerce platform — 314万7,469件 — was leaked, including names, addresses, email addresses, phone numbers, and hashed login passwords. It has been announced that credit card information is not included.
- Information involved
- Full nameHome addressEmail addressPhone numberPassword
- Cause / key point
- Intrusion by unauthorized access exploiting a software vulnerability.About Exploitation of vulnerabilities
- Industry
- Retail & e-commerce
- Last updated
- October 28, 2026
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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: Exploitation of vulnerabilities(Breaking in through holes in software and devices)
Read the Exploitation of vulnerabilities guide and national trends →