2,886individuals
Hacking/IT IncidentUnder investigation
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
22,500individuals
Hacking/IT IncidentArchived
11,844individuals
Hacking/IT IncidentArchived
564individuals
Hacking/IT IncidentUnder investigation
266,183individuals
Hacking/IT IncidentUnder investigation
2,856individuals
Hacking/IT IncidentUnder investigation
2,316individuals
Hacking/IT IncidentUnder investigation
12,020individuals
Hacking/IT IncidentArchived
53,888individuals
Hacking/IT IncidentUnder investigation
18,943individuals
Hacking/IT IncidentUnder investigation
25,000individuals
Hacking/IT IncidentUnder investigation
12,801individuals
Hacking/IT IncidentUnder investigation
1,855individuals
Unauthorized Access/DisclosureArchived
8,000individuals
Hacking/IT IncidentUnder investigation
547individuals
Hacking/IT IncidentArchived
908individuals
Hacking/IT IncidentArchived
5,204individuals
Hacking/IT IncidentArchived
1,761individuals
Unauthorized Access/DisclosureUnder investigation
7,329individuals
Unauthorized Access/DisclosureUnder investigation
5,830,949individuals
Hacking/IT IncidentArchived
7,019individuals
Hacking/IT IncidentArchived
20,976individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
5,864individuals
Hacking/IT IncidentUnder investigation
5,905individuals
Unauthorized Access/DisclosureArchived
10,490individuals
Hacking/IT IncidentArchived
523individuals
Unauthorized Access/DisclosureArchived
2,275individuals
Hacking/IT IncidentUnder investigation
5,305individuals
Hacking/IT IncidentArchived
13,652individuals
Hacking/IT IncidentUnder investigation
3,183individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
8,598individuals
Hacking/IT IncidentUnder investigation
6,420individuals
Hacking/IT IncidentUnder investigation
1,510individuals
Hacking/IT IncidentUnder investigation
1,071individuals
Hacking/IT IncidentArchived
4,457individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
31,582individuals
Hacking/IT IncidentUnder investigation
1,109individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
11,845individuals
Hacking/IT IncidentUnder investigation
695individuals
Hacking/IT IncidentUnder investigation
2,523individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
85,585individuals
Hacking/IT IncidentUnder investigation
4,055individuals
Hacking/IT IncidentUnder investigation
551individuals
Unauthorized Access/DisclosureUnder investigation
113,330individuals
Hacking/IT IncidentUnder investigation
32,021individuals
Hacking/IT IncidentUnder investigation
574individuals
Unauthorized Access/DisclosureArchived
3,464individuals
Hacking/IT IncidentUnder investigation
5,385individuals
Hacking/IT IncidentUnder investigation
67,115individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
2,027individuals
Hacking/IT IncidentUnder investigation
5,900individuals
Hacking/IT IncidentUnder investigation
276,498individuals
Hacking/IT IncidentUnder investigation
54,131individuals
Hacking/IT IncidentUnder investigation
62,972individuals
Hacking/IT IncidentUnder investigation
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.