The UnitedHealth Group is grappling with the aftermath of a significant cybersecurity attack on its subsidiary, Change Healthcare, last month, described as the 'biggest cybersecurity attack on America’s healthcare system.' The attack has disrupted services, leading to a testing phase for restoring the Change Healthcare claims platform, with no date yet for finishing the recovery. UnitedHealth has advanced over $2 billion in payments to healthcare providers to mitigate financial strains, and US insurers are expediting payments to healthcare providers. The US government has initiated an investigation into the incident, highlighting the ongoing vulnerability of the healthcare system to cyberattacks and the critical need for robust defenses. Federal officials and industry executives have acknowledged the healthcare system's susceptibility to such threats but have been criticized for not implementing sufficient improvements to prevent them.