Kaiser Foundation Health Plan Reports Data Exposure to California AG

Kaiser Foundation Health Plan in California has officially reported an unauthorized disclosure of data. This incident, reported on March 12, 2026, stems from an event that occurred on April 12, 2024.

The exposure involved specific categories of member information being transmitted to various third-party vendors. The data types identified in the filing include member names, IP addresses, and health-related web activity. This transmission occurred due to the use of online tracking technologies.

The scope of this incident is significant, with filings indicating that approximately 13,400,000 individuals have been affected by this data exposure.

Individuals potentially affected by this event should remain vigilant. It is recommended to review privacy settings on online accounts, be cautious of unexpected communications, and consider updating passwords for critical services. Staying informed about official updates from Kaiser Foundation Health Plan is also advised.

Details regarding this incident were made public through filings with the California Attorney General's office. The investigation status for this case is currently listed as "monitoring," according to the official report.