A cyberattack Feb. 21 began disrupting systems and services at Change Healthcare, one of the largest health care technology companies in the United States, according to news reports and statements by UnitedHealth Group’s Optum unit, which acquired Change Healthcare in 2022.

“Change Healthcare is experiencing a cyber security issue, and our experts are working to address the matter,” the company said. “Once we became aware of the outside threat, in the interest of protecting our partners and patients, we took immediate action to disconnect our systems to prevent further impact. At this time, we believe the issue is specific to Change Healthcare and all other systems across UnitedHealth Group are operational. The disruption is expected to last at least through the day. We will provide updates as more information becomes available.”

For more information, see today’s AHA Cybersecurity Advisory

Related News Articles

Headline
In part one of a new blog, John Riggi, AHA national advisor for cybersecurity and risk, and Scott Gee, AHA deputy national advisor for cybersecurity and risk,…
Perspective
Public
This week, the FBI issued an urgent warning to all users — including hospitals — of a critical security soft spot within Oracle’s E-Business Suite, stating “…
Headline
The Health Sector Coordinating Council Oct. 7 released its Sector Mapping and Risk Toolkit, created to help health care providers and other organizations…
AHA Cyber Intel
As of Oct. 3, 2025, 364 hacking incidents had been reported to the U.S. Department of Health and Human Services Office for Civil Rights, affecting over 33…
Headline
The AHA Oct. 6 released a Cybersecurity Advisory urging immediate action against a critical Oracle E-Business Suite vulnerability that is remotely exploitable…
Headline
The AHA has launched an enhanced Cybersecurity and Risk webpage designed to help health care organizations strengthen their defenses against emerging cyber and…