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Latest / California / March 2025

Blue Shield of California

Blue Shield of California notified California AG on Mar 28, 2025 of a data breach, which occurred on Nov 11, 2024. Data exposed: Social Security number, Financial / bank account, Medical / health information, Name.

All 11 filings by Blue Shield of California, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Blue Shield of California
Source
California AG · source record
Date reported
Mar 28, 2025
Date(s) of breach
Monday, October 28, 2024Monday, November 11, 2024
Residents affected
Not published by this source
Data exposed
Social Security number Financial / bank account Medical / health information Name
Notice letter
Sample notice (PDF)
Discovered
Nov 8, 2024, as stated in the letter
"WHAT HAPPENED On November 8, 2024, it was identified by a health information exchange that there was a data mismatch error which may have allowed your family member(s) on your same plan the ability to view your health records in their Me..."
Days to notice
140 days from discovery (Nov 8, 2024) to the California record (Mar 28, 2025). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
First seen by BreachTally
2026-10-30 15:31 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 15:31 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 Blue Shield of California

OrganizationSourceStateReportedResidents affectedData exposed
Blue Shield of California California AG CA Jul 21, 2025 Not published In the letter (PDF)
Blue Shield of California California AG CA Jun 23, 2025 Not published Social Security numberFinancial / bank accountMedical / health informationEmail address+2
Blue Shield of California HHS OCR US Jun 23, 2025 673 Medical / health information
Blue Shield of California California AG CA Jun 6, 2025 Not published Social Security numberDriver's license / state IDFinancial / bank accountMedical / health information+5
Blue Shield of California California AG CA Apr 9, 2025 Not published Social Security numberFinancial / bank accountMedical / health informationName
Blue Shield of California California AG CA Jul 12, 2022 Not published Social Security numberFinancial / bank accountMedical / health informationDate of birth+2
Blue Shield of California California AG CA Oct 27, 2021 Not published Social Security numberFinancial / bank accountMedical / health informationDate of birth+4
Blue Shield of California California AG CA Jan 14, 2016 Not published Social Security numberFinancial / bank accountMedical / health informationDate of birth+3
Blue Shield of California California AG CA Jul 3, 2014 Not published Social Security numberFinancial / bank accountMedical / health informationPhone number+2
Blue Shield of California California AG CA Feb 18, 2014 Not published In the letter (PDF)

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