Hoag Memorial Hospital Presbyterian, based in Newport Beach, California, reported a data security incident after discovering suspicious activity on its network on October 8, 2026. The healthcare system initiated an investigation and completed a review of potentially impacted files on October 25, 2026. On November 4, 2026, Hoag submitted an official data breach notification to the California Attorney General's office.
According to the sample notice filed with regulators, unauthorized actors may have accessed files containing individuals' names along with personal information and protected health information. The specific data elements compromised and the total number of affected individuals have not been disclosed in the public regulatory filings.
Additional details regarding the exact scope of the breach and whether financial details or Social Security numbers were involved remain unconfirmed. Individual notifications and regulatory updates may continue as the incident response proceeds.