Incident Analysis
Change Healthcare Ransomware 2024: Deep Dive
The Change Healthcare ransomware attack knocked US healthcare payments offline for weeks. A missing MFA on a Citrix portal was the root cause United confirmed.
Mar 5, 20267 min read
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
The Change Healthcare ransomware attack knocked US healthcare payments offline for weeks. A missing MFA on a Citrix portal was the root cause United confirmed.
In January 2025 UnitedHealth revised the Change Healthcare breach count to 190 million people, the largest HIPAA breach in US history. We unpack what changed and the supply-chain lessons that still apply.
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