Warner Music Group

Warner Music Group notified California AG on Sep 2, 2020 of a data breach, which occurred on Apr 25, 2020. Data exposed: Financial / bank account, Email address, Phone number, Postal address, Name.

Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization: Warner Music Group
Source: California AG · source record
Date reported: Sep 2, 2020
Date(s) of breach: Saturday, April 25, 2020
Residents affected: Not published by this source
Data exposed: Financial / bank account Email address Phone number Postal address Name
Notice letter: Sample notice (PDF)
Discovered: Aug 5, 2020, as stated in the letter
"On August 5, 2020, we learned that an unauthorized third party had compromised a number of US-based e-commerce websites WMG operates but that are hosted and supported by an external service provider."
Days to notice: 28 days from discovery (Aug 5, 2020) to the California record (Sep 2, 2020). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Offered in the letter: 12 months of credit or identity monitoring through Experian
Third party: The letter attributes the incident to a vendor or service provider
First seen by BreachTally: 2026-10-30 16:09 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

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Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.