アイリスオーヤマ（アイリスプラザ）Data breach / unauthorized access incident
- Occurred on
- October 28, 2026
- Announced on
- October 29, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- Unknown
- Main impact
- The official online store was subjected to unauthorized access and the site has been temporarily suspended to protect customers. No leakage of credit card information has been confirmed, but leakage of names, addresses, phone numbers, and email addresses is under investigation.
- Information involved
- Email addressFull nameHome addressPhone number
- Cause / key point
- Suspicious files were found on the server as a result of unauthorized access and signs of intrusion were confirmed, but the intrusion route has not been disclosed.
- Industry
- Retail & e-commerce
- Last updated
- October 31, 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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)
Read the Unauthorized access (method undisclosed) guide and national trends →