Case file: Kaiser Foundation Health Plan, Inc.
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
- Not stated in the filings
- Discovered
- Oct 25, 2023, as stated in the California letter
- State and federal records
- 2 filings, Apr 12, 2024
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- 13,400,000, as reported to Oregon DOJ on Apr 12, 2024
- Information exposed
- Social Security number, Financial / bank account, Usernames / passwords, Postal address
- Offered to those affected
- No monitoring offer found in the letters 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 all 2 states that set one, counted from discovery to each state's first record
- Prior incidents
- 4 earlier incidents on record for this organization
The letter: "On October 25, 2023, Kaiser Permanente determined that certain online technologies (commonly known as cookies or pixels) installed on our websites and mobile applications may have transmitted personal information to our third-party vendo..."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Oregon Oregon DOJ | Apr 12, 2024 | 13,400,000 (total) | 170 days, statute 45 days, over | Record | |
| California California AG | Apr 12, 2024 | Not published | 170 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
- 170 days from discovery (Oct 25, 2023) to the Oregon record (Apr 12, 2024). Statute: 45 days from discovery or notification of the breach (ORS 646A.604).
- 170 days from discovery (Oct 25, 2023) to the California record (Apr 12, 2024). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
The statutes
- Oregon: 45 days to notify residents from discovery or notification of the breach, ORS 646A.604. Attorney General when more than 250 Oregon residents are affected, with the consumer notice.
- 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 Kaiser Foundation Health Plan, Inc.
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Dec 5, 2017 to Dec 28, 2017 | Oct 9, 2017 to Nov 2, 2017 | California, California | n/a |
| Aug 31, 2017 | Aug 9, 2017 | California | n/a |
| Sep 11, 2013 | May 16, 2013 | California | n/a |
| Mar 16, 2012 | Sep 26, 2011 | California | n/a |
Filings more than six months apart are shown as separate incidents.
Filings by others that name Kaiser Foundation Health Plan, Inc.
Clients of a breached vendor often file under their own names and name the vendor.
- Kaiser Foundation Health Plan, Inc., Southern California, California, Jul 15, 2022
- Kaiser Foundation Health Plan of the Northwest, Oregon, Nov 4, 2016, 544
Sources and method
Records as published by Oregon DOJ, California AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter 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.