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JAENES
SPossible leakSeptember 18, 2026 announced

ランドハウジング（内見予約システム）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
July 16, 2026
Announced on
September 18, 2026
Severity
SCompromise of deep personal data or usable credentials.
Scale
Unknown
Main impact
Accounts registered in another company's property viewing reservation system were illicitly used to make multiple viewing reservations. Because key information may have been leaked, locks were replaced for all affected properties.
Information involved
User / member ID
Cause / key point
The cause is under investigation.
Industry
Real estate
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
User / member IDHow severity is assessed →

Is this incident worth paying attention to?

Written & reviewed

笹尾 祐太朗の写真

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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