Case file: Blue Shield of California
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Apr 4, 2025 to May 22, 2025
- Discovered
- Apr 4, 2025, as stated in the California letter
- State and federal records
- 4 filings, Jun 6, 2025 to Jul 21, 2025
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- 673, as reported to HHS OCR on Jun 23, 2025
- Information exposed
- Social Security number, Financial / bank account, Medical / health information, Email address, Postal address, Driver's license / state ID, Date of birth, Phone number
- Offered to those affected
- 12 months of credit or identity monitoring through Experian
- Third party named
- No
- Days to notice
- Past the statutory period in California, counted from discovery to the state's first record
- Prior incidents
- 5 earlier incidents on record for this organization
The letter: "WHAT HAPPENED On April 4, 2025, the Blue Shield of California (BSC) Digital Health Record team identified an incorrect data merge where some BSC members were able to potentially view another member's data in the Member Health Record feat..."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| California California AG | Jul 21, 2025 | Not published | Later filing, first record Jun 6, 2025 | Letter Record | |
| California California AG | Jun 23, 2025 | Not published | Later filing, first record Jun 6, 2025 | Letter Record | |
| HHS OCR HHS OCR | Jun 23, 2025 | 673 (total) | 80 days | Record | |
| California California AG | Jun 6, 2025 | Not published | 63 days, statute 30 days, over | Letter Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Notice timing, state by state
- 63 days from discovery (Apr 4, 2025) to the California record (Jun 6, 2025). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
The statutes
- California: 30 days to notify residents from discovery or notification of the breach, Cal. Civ. Code § 1798.82. Sample notice to the Attorney General when more than 500 Californians are notified, within 15 days of the consumer notice (effective 2026).
Prior incidents by Blue Shield of California
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Mar 28, 2025 to Apr 9, 2025 | Apr 1, 2021 to Nov 11, 2024 | California, California | n/a |
| Jul 12, 2022 | Apr 28, 2022 | California | n/a |
| Oct 27, 2021 | Aug 25, 2021 | California | n/a |
| Jan 14, 2016 | Dec 17, 2015 | California | n/a |
| Feb 18, 2014 to Jul 3, 2014 | Apr 30, 2013 to Dec 20, 2013 | California, California | n/a |
Filings more than six months apart are shown as separate incidents.
Filings by others that name Blue Shield of California
Clients of a breached vendor often file under their own names and name the vendor.
- California Physicians' Services d/b/a Blue Shield of California, California, Mar 31, 2023
- Blue Shield of California (BSC), California, Dec 22, 2022
- California Physicians' Services d/b/a Blue Shield of California, California, Dec 13, 2021
- California Physicians' Services d/b/a Blue Shield of California, California, Nov 6, 2020
- California Physicians' Service d/b/a Blue Shield of California, California, Feb 15, 2019
- California Physicians’ Service, d/b/a Blue Shield of California, California, Apr 13, 2018
- California Physicians’ Service, d/b/a Blue Shield of California, California, Jun 5, 2015
Sources and method
Records as published by California AG, HHS OCR. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 3 letters read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.