UnitedHealth confirms 190 million Americans affected by Change Healthcare data breach
1. Change Healthcare's cyberattack impacted around 190 million individuals in the U.S. 2. Previous estimates of affected individuals were approximately 100 million. 3. The breach is the largest medical data breach in U.S. history. 4. UnitedHealth confirmed no evidence of misuse of personal data so far. 5. The breach resulted in significant outages across the U.S. healthcare system.