2,000individuals
The Signal Directory
Health Data Breach Tracker
Search every US health data breach of 500 or more people reported to HHS OCR since 2009. Filter by entity, type and date. Built from the OCR public breach portal.
Breaches listed
8,066
2009 to 2026
Individuals affected
1,106,146,271
sum of reported counts
Under investigation
open OCR cases
Top breach types
- 4,864
- 1,694
- 1,003
- 216
Monthly roundups
7,300individuals
NC · Nov 8, 2013
North Carolina Department of Health and Human Services - Division of State Operated Health Care Facilities
Healthcare Provider
1,315individuals
13,336individuals
687individuals
1,100individuals
11,500individuals
3,807individuals
651individuals
2,237individuals
3,500individuals
1,167individuals
6,284individuals
2,300individuals
10,680individuals
603individuals
5,840individuals
729,000individuals
10,930individuals
3,833individuals
37,000individuals
WI · Oct 25, 2013
SSM Health Care of Wisconsin DBA: St. Mary���s Janesville Hospital
Healthcare Provider
631individuals
3,947individuals
5,500individuals
949individuals
610individuals
960individuals
1,556individuals
550individuals
566individuals
1,067individuals
606individuals
7,120individuals
3,100individuals
1,310individuals
4,330individuals
1,586individuals
2,810individuals
1,015individuals
PA · Oct 3, 2013
Reconstructive Orthopaedic Associates II, P.C. d/b/a Rothman Institute
Healthcare Provider
2,350individuals
3,553individuals
5,232individuals
1,825individuals
2,500individuals
517individuals
6,932individuals
3,512individuals
1,360individuals
579individuals
10,228individuals
9,900individuals
25,461individuals
1,009individuals
915individuals
8,000individuals
IL · Sep 13, 2013
Advocate Health and Hospitals Corporation d/b/a Advocate Medical Group
Business Associate
2,029individuals
998individuals
4,204individuals
4,268individuals
915individuals
About this data
By Dr. Dereck Mush, MD, MBA, Editor In Chief
It currently holds 8,066 breaches, with submission dates from October 21, 2009 to October 9, 2026, and it refreshes every week from OCR's public breach portal.
We built it for the people who have to act on this data: health system CISOs and security teams benchmarking their own risk, compliance and privacy leads tracking how breaches are reported, and investors doing diligence on healthcare companies and their vendors.
Here's how to read it. Each row is a single report filed with OCR. It shows the covered entity, its state and entity type, the number of individuals affected, the breach type (for example hacking or IT incident, or unauthorized access), where the information was held, and the date it was submitted. Use the filters to narrow by submission date, entity type or breach type, and open any row for its detail page. The monthly roundups group new reports by submission month, so you can see what changed recently without scrolling the full list.
- Source. Every record comes from the HHS OCR breach portal, which lists breaches of unsecured protected health information affecting 500 or more individuals. We show the data as OCR reports it and don't add or change the reported facts. Any editorial note we add is labeled as ours.
- Under investigation vs archive. OCR keeps two lists. "Under investigation" lists HIPAA breaches reported within the last 24 months that are currently under investigation by the Office for Civil Rights. "Archive" holds resolved HIPAA breach reports and/or reports older than 24 months. A breach can move from one list to the other between weekly refreshes.
- Individuals affected. These are the counts reported to OCR. Entities can revise them, and the same person can appear in more than one breach, especially when a single vendor incident is reported separately by several covered entities. Adding the counts together will overstate the number of unique people affected.
- No implication of wrongdoing. A listing means a breach was reported to OCR. It doesn't mean the entity broke the law or was at fault beyond what OCR itself has published. Check OCR's own records for any finding, resolution or penalty.
- Updates. The tracker refreshes weekly. If you spot something that doesn't match OCR's portal, tell us and we'll check it against the source.
Source: HHS Office for Civil Rights Breach Portal. Latest submission in the data: Oct 9, 2026. Refreshed weekly from the portal.