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Change Healthcare breach hits about 100 million people
The ALPHV attack on UnitedHealth's Change Healthcare became the largest US healthcare breach on record, affecting around 100 million people; UnitedHealth paid a $22m ransom.
- Organisation
- Change Healthcare
- Disclosed
- 21 February 2024
- Affected
- 100,000,000
- Data
- Health, insurance and personal data
- Attacker
- ALPHV/BlackCat
- Severity
- critical
- Region
- Global
- Source
- CM-Alliance ↗
Cite this
Nuffield Consulting, “Change Healthcare breach hits about 100 million people”, The Daily Tech Wire outage & breach log, 21 Feb 2024. https://techwire.nuffieldconsulting.com/incidents/2024-02-21-change-healthcare-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: CM-Alliance, https://www.cm-alliance.com/cybersecurity-blog/top-10-biggest-cyber-attacks-of-2024-25-other-attacks-to-know-about.
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