Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Kaiser Foundation Health Plan

7 breaches13M affected in allHealthcare

Ransomware breachRansomware exposed names and health records. Reported to the California AG.13M affectedHealthcareUSApr 12, 2024Insider breachInsider exposed names and health records. Reported to the HHS archive.695 affectedInsuranceUSApr 6, 2022Insider breachInsider exposed names and health records. Reported to the HHS archive.515 affectedInsuranceUSNov 7, 2019Insider breachInsider exposed names and health records. Reported to the California AG.4,389 affectedHealthcareUSAug 31, 2017Lost or stolen device breachLost or stolen device exposed names and health records. Reported to the HHS archive.2,451 affectedHealthcareUSApr 22, 2016Breach, details not statedBreach notice filed with the California AG, details not stated.HealthcareUSSep 11, 2013Breach, details not statedBreach notice filed with the California AG, details not stated.HealthcareUSMar 16, 2012
About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

Added2026-09-25
Kaiser Foundation Health Plan, 2016-04-22
records2026-09-25
Kaiser Foundation Health Plan, 2017-08-314389
attack2026-09-25
Kaiser Foundation Health Plan, 2017-08-31insider
data_types2026-09-25
Kaiser Foundation Health Plan, 2017-08-31["names","health"]
records_basis2026-09-25
Kaiser Foundation Health Plan, 2017-08-31hhs
records2026-09-25
Kaiser Foundation Health Plan, 2017-08-31638
summary2026-09-25
Kaiser Foundation Health Plan, 2017-08-31Kaiser Foundation Health Plan (Kaiser), the covered entity (CE), reported that it had impermissibly disclosed protected health information (PHI) due to a flaw in its mail merge and quality assurance process. The breach affected 638 individu
Added2026-09-25
Kaiser Foundation Health Plan, 2019-11-07
Added2026-09-25
Kaiser Foundation Health Plan, 2022-04-06
data_types2026-09-25
Kaiser Foundation Health Plan, 2024-04-12["names","health"]
records_basis2026-09-25
Kaiser Foundation Health Plan, 2024-04-12hhs
records2026-09-25
Kaiser Foundation Health Plan, 2024-04-1213400000
summary2026-09-25
Kaiser Foundation Health Plan, 2024-04-12The covered entity (CE), Kaiser Foundation Health Plan, Inc., reported that it disclosed the protected health information (PHI) for up to 13,134,908 individuals while using third-party tracking technologies. The PHI involved clinical, demog
attack2026-09-25
Kaiser Foundation Health Plan, 2024-04-12ransomware
discovered2026-09-25
Kaiser Foundation Health Plan, 2024-04-122023-05-31
occurred2026-09-25
Kaiser Foundation Health Plan, 2024-04-122023-05-31
Added2026-09-25
Kaiser Foundation Health Plan, 2012-03-16
Added2026-09-25
Kaiser Foundation Health Plan, 2013-09-11
disclosed2026-09-25
Kaiser Foundation Health Plan, 2017-08-312017-08-31
disclosed2026-09-25
Kaiser Foundation Health Plan, 2017-08-312017-12-05
Added2026-09-25
Kaiser Foundation Health Plan, 2017-08-31
Added2026-09-25
Kaiser Foundation Health Plan, 2024-04-12
Added2026-09-25
Kaiser Foundation Health Plan