1,911individuals
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
501individuals
Hacking/IT IncidentUnder investigation
1,935individuals
Hacking/IT IncidentArchived
1,236individuals
Hacking/IT IncidentArchived
4,824individuals
Hacking/IT IncidentArchived
1,808individuals
Hacking/IT IncidentArchived
2,978individuals
Hacking/IT IncidentArchived
3,159individuals
Hacking/IT IncidentArchived
12,944individuals
Hacking/IT IncidentArchived
10,268individuals
Hacking/IT IncidentArchived
4,108individuals
Hacking/IT IncidentArchived
7,214individuals
Hacking/IT IncidentArchived
NY · Jun 26, 2025
Amalgamated Meat Cutters and Retail Food Store Employees Union Local 342 Health Care Fund
Health Plan
56,615individuals
Hacking/IT IncidentUnder investigation
4,947individuals
Hacking/IT IncidentArchived
16,046individuals
Hacking/IT IncidentUnder investigation
47,000individuals
Hacking/IT IncidentArchived
743,131individuals
Hacking/IT IncidentUnder investigation
1,099individuals
Unauthorized Access/DisclosureUnder investigation
673individuals
Unauthorized Access/DisclosureUnder investigation
101,104individuals
Hacking/IT IncidentUnder investigation
23,671individuals
Hacking/IT IncidentUnder investigation
2,703individuals
Hacking/IT IncidentUnder investigation
CA · Jun 20, 2025
Los Angeles County Developmental Services Fdn., Inc. dba Frank D. Lanterman Regional Ctr.
Healthcare Provider
19,000individuals
Hacking/IT IncidentUnder investigation
3,604individuals
Hacking/IT IncidentUnder investigation
1,038individuals
Hacking/IT IncidentUnder investigation
10,239individuals
Hacking/IT IncidentArchived
1,499individuals
Hacking/IT IncidentUnder investigation
142,004individuals
Hacking/IT IncidentArchived
536individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentArchived
637individuals
Unauthorized Access/DisclosureUnder investigation
4,530individuals
Unauthorized Access/DisclosureUnder investigation
642individuals
Unauthorized Access/DisclosureArchived
166,953individuals
Hacking/IT IncidentUnder investigation
24,737individuals
Hacking/IT IncidentArchived
61,066individuals
Hacking/IT IncidentArchived
931individuals
Hacking/IT IncidentArchived
38,191individuals
Hacking/IT IncidentUnder investigation
10,358individuals
Hacking/IT IncidentUnder investigation
771individuals
Hacking/IT IncidentUnder investigation
36,542individuals
Hacking/IT IncidentUnder investigation
2,757individuals
Hacking/IT IncidentUnder investigation
14,741individuals
Hacking/IT IncidentArchived
606individuals
Hacking/IT IncidentUnder investigation
13,278individuals
Unauthorized Access/DisclosureArchived
154,417individuals
Hacking/IT IncidentArchived
1,632individuals
Unauthorized Access/DisclosureArchived
630individuals
Unauthorized Access/DisclosureUnder investigation
6,725,572individuals
Hacking/IT IncidentUnder investigation
25,398individuals
Hacking/IT IncidentUnder investigation
5,728individuals
Hacking/IT IncidentArchived
FL · Jun 6, 2025
Public Health Trust of Miami Dade County DBA Jackson Health System
Healthcare Provider
2,599individuals
Unauthorized Access/DisclosureArchived
119,525individuals
Hacking/IT IncidentArchived
26,976individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
1,089individuals
Unauthorized Access/DisclosureArchived
3,000individuals
Unauthorized Access/DisclosureArchived
15,630individuals
Hacking/IT IncidentArchived
36,659individuals
Hacking/IT IncidentArchived
105,518individuals
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.