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Latest / California / April 2026

Marin Cancer Care

Marin Cancer Care notified California AG on Apr 23, 2026 of a data breach, which occurred on Nov 22, 2025.

All 2 filings by Marin Cancer Care, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Marin Cancer Care
Source
California AG · source record
Date reported
Apr 23, 2026
Date(s) of breach
Saturday, November 22, 2025
Residents affected
Not published by this source
Data exposed
Not stated in the source listing
Notice letter
Sample notice (PDF)
Days to notice
152 days from the end of the breach window (Nov 22, 2025, no discovery date in the letter) to the California record (Apr 23, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
First seen by BreachTally
2026-10-30 15:27 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 15:27 UTC on Oct 30, 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 Marin Cancer Care

OrganizationSourceStateReportedResidents affectedData exposed
Marin Cancer Care Vermont AG VT Apr 23, 2026 2 Medical / 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.