McKesson confirms cyber incident after ShinyHunters claims patient-data theft

Healthcare and pharmaceutical-distribution giant McKesson has disclosed a cybersecurity incident involving unauthorized access to third-party applications and the theft of data. McKesson Corporation is an American healthcare company that distributes pharmaceuticals and provides medical supplies, health information technology, and care management tools. McKesson says it discovered the cybersecurity incident on August 25, 2026, and that its investigation is still in early stages.