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. 

Headline
A joint advisory issued Oct. 20 by U.S. and international agencies warns of recent activity by the SafePay Ransomware group. The group has been active since…
Headline
Two critical vulnerabilities have been discovered in Hypertext Preprocessor, or PHP, a widely-used open-source scripted language for web development, its…
Headline
John Riggi, AHA national advisor for cybersecurity and risk, and Brett Leatherman, assistant director of the FBI Cyber Division, break down Operation Riptide,…
Headline
The National Security Agency has issued guidance on reducing the risk of simple network management protocol abuse. SNMP consists of a standardized framework…
Headline
Microsoft and Health-ISAC Oct. 15 announced that they disrupted three cybercriminal businesses that provided services to threat actors to attack more than 75…
Headline
The AHA will host a webinar Oct. 20 at 1 p.m. ET that will explore the evolving voice threat landscape — including voice phishing, or vishing, spoofing and…