いえらぶGROUP（クラウドサービス）Data breach / unauthorized access incident
- Occurred on
- April 5, 2026
- Announced on
- April 30, 2026
- Severity
- AFinancial and HR records — information that easily translates into monetary damage.
- Scale
- Unknown
- Main impact
- いえらぶGROUP announced that data was leaked from its cloud service; the leak may include contact details, desired property criteria, and parts of communication histories, but the number of affected records is not stated in the released materials.
- Information involved
- Email addressPhone numberHome addressFull name
- Cause / key point
- The company stated the incident was unauthorized access triggered by a system vulnerability, and explained attackers likely used infostealers and similar tools to steal clients' account information.About Exploitation of vulnerabilities
- Industry
- IT & telecom
- Listing / capital
- Unlisted
- 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: Exploitation of vulnerabilities(Breaking in through holes in software and devices)
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