Kaiser Permanente, a leading healthcare provider in the US, experienced a cyber attack compromising the personal data of 13.4 million users.
The breach was caused by unauthorized access to City of Hope, a service provider to Kaiser Permanente.
Sensitive information including names, contact details, social security numbers, and medical records were accessed and copied by the attacker.
City of Hope has taken immediate action to secure their systems, conducted an investigation, and implemented enhanced security measures to prevent future incidents.