Kaiser Foundation Health Plan, Inc., Southern California

The covered entity (CE), Leon Medical Centers, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 76,661 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, health insurance and claims information, diagnoses/conditions, lab results, medications, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards. Staff were retrained to better protect its PHI.