1,042individuals
Unauthorized Access/DisclosureArchived
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
5,272individuals
Hacking/IT IncidentArchived
9,650individuals
Hacking/IT IncidentArchived
2,608individuals
Hacking/IT IncidentArchived
6,288individuals
Hacking/IT IncidentArchived
8,453individuals
Hacking/IT IncidentArchived
676individuals
Hacking/IT IncidentArchived
4,277individuals
Unauthorized Access/DisclosureArchived
23,376individuals
Hacking/IT IncidentArchived
1,270individuals
Hacking/IT IncidentArchived
748,678individuals
Hacking/IT IncidentArchived
62,627individuals
Hacking/IT IncidentArchived
180,694individuals
Hacking/IT IncidentArchived
833individuals
Hacking/IT IncidentArchived
6,737individuals
Hacking/IT IncidentArchived
10,000individuals
Hacking/IT IncidentArchived
535individuals
Unauthorized Access/DisclosureArchived
6,591individuals
Unauthorized Access/DisclosureArchived
501individuals
Improper DisposalArchived
4,047individuals
Hacking/IT IncidentArchived
3,689individuals
Hacking/IT IncidentArchived
58,374individuals
Unauthorized Access/DisclosureArchived
921individuals
Unauthorized Access/DisclosureArchived
15,168individuals
Hacking/IT IncidentArchived
37,965individuals
Hacking/IT IncidentArchived
49,968individuals
Hacking/IT IncidentArchived
821individuals
Unauthorized Access/DisclosureArchived
3,099,502individuals
Hacking/IT IncidentArchived
154,285individuals
Hacking/IT IncidentArchived
2,719individuals
TheftArchived
1,304individuals
Unauthorized Access/DisclosureArchived
20,815individuals
Hacking/IT IncidentArchived
35,766individuals
Hacking/IT IncidentArchived
768individuals
Unauthorized Access/DisclosureArchived
51,787individuals
Hacking/IT IncidentArchived
31,440individuals
Hacking/IT IncidentArchived
7,411individuals
Hacking/IT IncidentArchived
4,044individuals
Hacking/IT IncidentArchived
473,467individuals
Hacking/IT IncidentArchived
7,672individuals
Hacking/IT IncidentArchived
21,830individuals
Hacking/IT IncidentArchived
199,753individuals
Hacking/IT IncidentArchived
10,011individuals
Unauthorized Access/DisclosureArchived
845individuals
Hacking/IT IncidentArchived
125,794individuals
Hacking/IT IncidentArchived
15,246individuals
Unauthorized Access/DisclosureArchived
1,553individuals
Hacking/IT IncidentArchived
13,240individuals
Hacking/IT IncidentArchived
4,498individuals
Unauthorized Access/DisclosureArchived
61,788individuals
Hacking/IT IncidentArchived
842individuals
Hacking/IT IncidentArchived
42,020individuals
Hacking/IT IncidentArchived
15,996individuals
Hacking/IT IncidentArchived
108,584individuals
Unauthorized Access/DisclosureArchived
20,376individuals
Hacking/IT IncidentArchived
276,993individuals
Hacking/IT IncidentArchived
19,567individuals
Hacking/IT IncidentArchived
1,005individuals
Improper DisposalArchived
40,290individuals
Hacking/IT IncidentArchived
39,674individuals
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.