The U.S. Department of Health and Human Services' Office for Civil Rights (OCR) has launched an investigation into a cyberattack affecting UnitedHealth Group's Change Healthcare and other healthcare entities. The attack disrupted healthcare and billing operations nationwide. OCR's investigation will determine if there was a breach of protected health information and compliance with HIPAA Rules. The Biden administration urged UnitedHealth to take action to stabilize the health system and expedite funding for affected providers. Despite efforts to restore the network by March 18, healthcare leaders expect prolonged disruptions. Cyber threats in healthcare have significantly increased, with hacking and ransomware incidents rising dramatically over the past five years.