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Latest / California / December 2023

Fred Hutchinson Cancer Center

Fred Hutchinson Cancer Center notified California AG on Dec 22, 2023 of a data breach, which occurred on Nov 25, 2023. Data exposed: Social Security number, Financial / bank account, Medical / health information, Health insurance, Date of birth, Email address, Phone number, Postal address, Name.

All 4 filings by Fred Hutchinson Cancer Center, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Fred Hutchinson Cancer Center
Source
California AG · source record
Date reported
Dec 22, 2023
Date(s) of breach
Sunday, November 19, 2023Saturday, November 25, 2023
Residents affected
Not published by this source
Data exposed
Social Security number Financial / bank account Medical / health information Health insurance Date of birth Email address Phone number Postal address Name
Notice letter
Sample notice (PDF)
Discovered
Nov 19, 2023, as stated in the letter
"On November 19, 2023, we detected unauthorized activity on limited parts of our clinical network."
Days to notice
33 days from discovery (Nov 19, 2023) to the California record (Dec 22, 2023). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
Offered in the letter
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 15:42 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 15:42 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 Fred Hutchinson Cancer Center

OrganizationSourceStateReportedResidents affectedData exposed
Fred Hutchinson Cancer Center Oregon DOJ OR Dec 22, 2023 339,469 Not stated
Fred Hutchinson Cancer Center Oregon DOJ OR Oct 21, 2022 89,111 Not stated
Fred Hutchinson Cancer Center California AG CA Oct 20, 2022 Not published Medical / health informationEmail addressName

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