Case file: Keck Medicine of USC
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
- Jan 20, 2022 to Sep 30, 2022
- Discovered
- Apr 14, 2022, as stated in the California letter
- State and federal records
- 2 filings, Sep 30, 2022 to Dec 16, 2022
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- No filing gives a total
- Information exposed
- Medical / health information, Social Security number, Driver's license / state ID, Financial / bank account, Health insurance, Date of birth, Email address, Postal address
- Offered to those affected
- credit or identity monitoring through Experian (term not stated in the letter we read)
- Third party named
- Yes, the letter attributes the incident to a vendor or service provider
- Days to notice
- Past the statutory period in California, counted from discovery to the state's first record
The letter: "On April 14, 2022, we learned that an unauthorized third party gained access to a Microsoft Office 365-hosted business email account."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| California California AG | Dec 16, 2022 | Not published | Later filing, first record Sep 30, 2022 | Letter Record | |
| California California AG | Sep 30, 2022 | Not published | 169 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
- 169 days from discovery (Apr 14, 2022) to the California record (Sep 30, 2022). 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).
Sources and method
Records as published by California AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 2 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.