The Department of Health and Human Services (HHS) has initiated an investigation into UnitedHealth Group's cybersecurity practices following a cyberattack on its subsidiary, Change Healthcare. This probe, reported by various news outlets including the Washington Post and BloombergTV, comes three weeks after the incident, which has led to billions of dollars in health-care payments being frozen. Hospitals and doctors have warned they are struggling to meet payroll due to the stoppage. The HHS's Office for Civil Rights (OCR) is specifically investigating whether the breach involved protected health information, indicating the seriousness of the data security implications. The Biden administration's involvement underscores the potential widespread impact of the hack, which has disrupted healthcare payments and possibly exposed millions of patients' data. Ike Swetlitz reports.