アソビュー株式会社Data breach / unauthorized access incident
- Occurred on
- May 20, 2026
- Announced on
- May 27, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- 27,163 records
- Main impact
- 27,163 reservation records from the reservation management system were leaked externally. Included names, gender, date of birth, phone numbers, addresses, and reservation details; email addresses, passwords, and credit card information were not included.
- Information involved
- Email addressAuth tokenCard & payment dataPhone numberHome addressFull nameDate of birth
- Cause / key point
- It was determined that the information was leaked due to unauthorized access from an external cyberattack.
- Industry
- Transport & travel
- Listing / capital
- Unlisted
- Sources
- Last updated
- October 20, 2026
Is this incident worth paying attention to?
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 →