Marin Cancer Care: data breach notice to the California Attorney General, reported 2026-04-23

An official record: a breach notice reported to the California Attorney General under California law. It is not ransomware attribution, and this page does not connect it to anything else on this site.

Notice

From California Office of the Attorney General, Data Security Breach list (SB 24, 500+ residents). Dataset version ref-7f68d11327d5, updated 2026-04-23T00:00:00.000Z.

Organization (as the register lists it)
Marin Cancer Care
Date(s) of breach (as listed)
2025-11-22
Reported
2026-04-23
Notice id
sb24-622211

Search this site for this name: Marin Cancer Care. A matching name is not evidence that two records concern the same organisation or the same event.

Read on 2026-11-03T00:26:25.550Z under licence ca-oag-conditions-of-use@bd697bc0 from https://oag.ca.gov/privacy/databreach/list

Sources and licences

  • California Office of the Attorney General

    Source: California Department of Justice, Office of the Attorney General, Data Security Breach Reports (oag.ca.gov/privacy/databreach/list), retrieved 2026-11-03.

    OAG Conditions of Use, OWNERSHIP section

Cite this page

Dragons Eye Ransomware Tracker, "Marin Cancer Care: data breach notice to the California Attorney General, reported 2026-04-23",
entity page, dataset version ref-7f68d11327d5, updated 2026-04-23T00:00:00.000Z,
https://ransomware-tracker.com/breach-notices/us-ca/sb24-622211 (accessed 2026-11-03).
Underlying source: California Office of the Attorney General, Data Security Breach Reports, notice sb24-622211, retrieved 2026-11-03.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.