15,846individuals
Hacking/IT IncidentArchived
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
8,066 breaches
2,484individuals
Hacking/IT IncidentArchived
28,531individuals
Hacking/IT IncidentArchived
78,692individuals
Hacking/IT IncidentArchived
240,667individuals
Hacking/IT IncidentArchived
377,931individuals
Hacking/IT IncidentArchived
1,758individuals
Unauthorized Access/DisclosureArchived
17,147individuals
Hacking/IT IncidentArchived
436,198individuals
Hacking/IT IncidentArchived
7,988individuals
Hacking/IT IncidentArchived
6,691individuals
Hacking/IT IncidentArchived
168,921individuals
Hacking/IT IncidentArchived
1,756individuals
Hacking/IT IncidentArchived
8,786individuals
Hacking/IT IncidentArchived
1,204individuals
Unauthorized Access/DisclosureArchived
501individuals
Hacking/IT IncidentArchived
5,796individuals
Hacking/IT IncidentArchived
13,129individuals
Hacking/IT IncidentArchived
1,000individuals
Hacking/IT IncidentArchived
116,956individuals
Hacking/IT IncidentArchived
43,875individuals
Hacking/IT IncidentArchived
14,782,887individuals
Hacking/IT IncidentArchived
6,832individuals
Hacking/IT IncidentArchived
164,796individuals
Hacking/IT IncidentArchived
NY · Nov 3, 2023
Catholic Charities of the Diocese of Rockville Centre d/b/a Catholic Charities of Long Island
Healthcare Provider
13,000individuals
Hacking/IT IncidentArchived
5,832individuals
Hacking/IT IncidentArchived
1,152individuals
Unauthorized Access/DisclosureArchived
79,582individuals
Hacking/IT IncidentArchived
9,302,588individuals
Hacking/IT IncidentArchived
2,033individuals
Hacking/IT IncidentArchived
100,645individuals
Hacking/IT IncidentArchived
845,441individuals
Hacking/IT IncidentArchived
1,380individuals
Hacking/IT IncidentArchived
20,045individuals
Hacking/IT IncidentArchived
13,603individuals
Hacking/IT IncidentArchived
757individuals
Hacking/IT IncidentUnder investigation
600individuals
Hacking/IT IncidentArchived
1,670individuals
Hacking/IT IncidentArchived
2,369,026individuals
Hacking/IT IncidentArchived
5,112individuals
Hacking/IT IncidentArchived
13,862individuals
Hacking/IT IncidentArchived
8,099individuals
Hacking/IT IncidentArchived
777individuals
Unauthorized Access/DisclosureArchived
27,800individuals
Hacking/IT IncidentArchived
279,156individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
350,863individuals
Hacking/IT IncidentArchived
6,684individuals
Hacking/IT IncidentArchived
14,912individuals
Hacking/IT IncidentArchived
2,187individuals
Unauthorized Access/DisclosureArchived
768individuals
Hacking/IT IncidentArchived
767,670individuals
Hacking/IT IncidentArchived
107,143individuals
Hacking/IT IncidentArchived
61,033individuals
Hacking/IT IncidentArchived
6,107individuals
Hacking/IT IncidentArchived
39,759individuals
Hacking/IT IncidentArchived
2,103,881individuals
Hacking/IT IncidentArchived
2,044individuals
Hacking/IT IncidentArchived
3,365individuals
Hacking/IT IncidentArchived
IL · Oct 19, 2023
Hospital & Medical Foundation of Paris, Inc d/b/a Horizon Health
Healthcare Provider
16,598individuals
Hacking/IT IncidentArchived
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.