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Dean Levitt
The HIPAA Breach Report for March 2026 analyzes protected health information (PHI) breaches affecting 500 or more people as reported to the Department of Health and Human Services (HHS) in February 2025.
This report covers:
- HIPAA breaches ranked by people affected
- HIPAA breaches ranked by occurrence
- Year-over-year comparison
- Takeaways
- Full data
HIPAA breaches ranked by people affected
Most common breaches by type
- Network server breaches affected the most people. 7,729,633 individuals had their data breached.
- Email breaches were the second most common breach, with 21,161 people affected.
- Electronic medical record breaches affected 12,311 people, the third most impactful breach type.
HIPAA breaches ranked by occurrence
Most common breach types
- Network server was the most common attack vector. There were 29 network server breaches.
- Email breaches were the second most common attack vector. There were 7 breaches.
- Electronic medical record, other, and Paper/film breaches were the third most common attack vectors, with 2 attacks each.
Year-over-year comparison
These charts compare the HIPAA data breach statistics from previous Paubox HIPAA Breach Reports (March 2022, March 2023, March 2024, and March 2025) with this month’s report.
HIPAA breaches ranked by people affected
What we observe
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Network server breaches affected the most people overall in February 2026.
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The number of people affected by network server breaches is more than three times that of the previous year.
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The number of individuals impacted by Email breaches in February 2026 was significantly lower than the previous year.
HIPAA breaches ranked by occurrence
What we observe
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Network server breaches were the most frequent attack vector.
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Email, as a vector, was about average for the last few years.
Takeaways
Network server breaches affected the most people in January 2026. TriZetto Provider Solutions had the most significant breach, which affected 3,433,965 people. ApolloMD Business Services, LLC had the second-largest breach, affecting 626,540 people.
Overall, over 7,777,948 individuals had their data accessed via 41 breaches reported in February 2026.
Full data
Click here to view the HHS’ raw data via Google Sheets.
About the Paubox HIPAA Breach Report
The Paubox HIPAA Breach Report analyzes recent PHI breaches that affected 500 or more individuals, as reported on the HHS Wall of Shame in September 2025.
SEE ALSO: HIPAA Compliant Email: The Definitive Guide
Robust inbound email security is a necessity for businesses today. Keeping your email security strategy updated helps ensure the protection of your network.
