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JAENES
SLeak confirmedMay 18, 2026 announced

ユニバーサル ミュージック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
Unconfirmed
Announced on
May 18, 2026
Severity
SCompromise of deep personal data or usable credentials.
Scale
3,100,000 records
Main impact
Approximately 約310万件 of names, contact information, and purchase histories were leaked, raising concerns about secondary harms such as identity fraud and spam emails.
Information involved
Email addressPhone numberHome addressFull nameDate of birth
Cause / key point
The cause is under investigation.
Industry
Media & entertainment
Listing / capital
Unlisted

Japan subsidiary of Universal Music Group

Sources
Last updated
October 20, 2026
Email addressPhone numberHome addressFull nameDate of birthHow 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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Attack method classification: Under investigation / not stated(Cause not disclosed)

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