Firstsource Health Plans and Healthcare Services, LLC, a service provider to health insurance clients, disclosed a programming error on its platform that potentially exposed protected health information (PHI) and standalone Social Security numbers. The incident involved unauthorized viewing or access to personally identifiable information (PII) via a platform supporting online document uploads for claims and correspondence. Firstsource engaged an independent forensic firm, which found no evidence of misuse. Affected individuals were offered credit monitoring and notified via state AG notices.