Latest / California / February 2025

Ascension Health

Ascension Health notified California AG on Feb 3, 2025 of a data breach, which occurred on Feb 29, 2024. Data exposed: Social Security number, Passport number, Financial / bank account, Medical / health information, Health insurance, Date of birth, Tax ID / EIN / ITIN, Postal address, Name.

All 5 filings by Ascension Health, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Ascension Health
Source
California AG · source record
Date reported
Feb 3, 2025
Date(s) of breach
Thursday, February 29, 2024
Residents affected
Not published by this source
Data exposed
Social Security number Passport number Financial / bank account Medical / health information Health insurance Date of birth Tax ID / EIN / ITIN Postal address Name
Notice letter
Sample notice (PDF)
Discovered
May 8, 2024, as stated in the letter
"What Happened On May 8, 2024, we detected unauthorized activity on certain of Ascension’s technology systems resulting from a ransomware attack."
Days to notice
271 days from discovery (May 8, 2024) to the California record (Feb 3, 2025). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
Offered in the letter
24 months of credit or identity monitoring through Experian
First seen by BreachTally
2026-10-30 15:38 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 15:38 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 Ascension Health

OrganizationSourceStateReportedResidents affectedData exposed
Ascension Health HHS OCR US Apr 28, 2025 437,329 Medical / health information
Ascension Health Oregon DOJ OR Feb 3, 2025 5,466,931 Not stated
Ascension Health Oregon DOJ OR Dec 19, 2024 5,599,699 Not stated
Ascension Health California AG CA Dec 19, 2024 Not published Social Security numberPassport numberFinancial / bank accountMedical / health information+5

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