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Latest / California / October 2026

Marathon Health

Marathon Health notified California AG on Oct 29, 2026 of a data breach, which occurred on Aug 24, 2026. Data exposed: Postal address, Name.

All 4 filings by Marathon Health, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Marathon Health
Source
California AG · source record
Date reported
Oct 29, 2026
Date(s) of breach
Monday, August 24, 2026
Residents affected
Not published by this source
Data exposed
Postal address Name
Notice letter
Sample notice (PDF)
Days to notice
66 days from the end of the breach window (Aug 24, 2026, no discovery date in the letter) to the California record (Oct 29, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Offered in the letter
credit or identity monitoring through Experian
First seen by BreachTally
2026-11-02 17:31 UTC

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

First seen by BreachTally at 17:31 UTC on Nov 2, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
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Other filings by Marathon Health

OrganizationSourceStateReportedResidents affectedData exposed
Marathon Health Vermont AG VT Oct 30, 2026 8,858 Social Security numberMedical / health information
Marathon Health Texas AG TX Oct 30, 2026 234,534 Social Security numberMedical / health informationHealth insuranceDate of birth+2
Marathon Health Massachusetts OCABR MA Oct 30, 2026 29,075 Social Security numberMedical / health information

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