10,124individuals
TheftArchived
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
566,217individuals
Hacking/IT IncidentArchived
9,000individuals
Unauthorized Access/DisclosureArchived
5,368individuals
Hacking/IT IncidentArchived
22,416individuals
Hacking/IT IncidentArchived
698individuals
Unauthorized Access/DisclosureArchived
39,605individuals
Hacking/IT IncidentArchived
5,000individuals
Hacking/IT IncidentArchived
1,102individuals
Unauthorized Access/DisclosureArchived
1,248,263individuals
Unauthorized Access/DisclosureArchived
550individuals
Unauthorized Access/DisclosureArchived
20,790individuals
Unauthorized Access/DisclosureArchived
20,000individuals
Hacking/IT IncidentArchived
8,056individuals
Unauthorized Access/DisclosureArchived
631individuals
Unauthorized Access/DisclosureArchived
1,431individuals
TheftArchived
30,000individuals
Hacking/IT IncidentArchived
2,300individuals
Unauthorized Access/DisclosureArchived
2,300individuals
TheftArchived
3,500individuals
Hacking/IT IncidentArchived
3,000individuals
TheftArchived
20,800individuals
Hacking/IT IncidentArchived
813individuals
Hacking/IT IncidentArchived
10,862individuals
Hacking/IT IncidentArchived
3,000individuals
Hacking/IT IncidentArchived
37,005individuals
Hacking/IT IncidentArchived
42,000individuals
Hacking/IT IncidentArchived
15,974individuals
Hacking/IT IncidentArchived
2,050individuals
Hacking/IT IncidentArchived
706individuals
Unauthorized Access/DisclosureArchived
4,058individuals
Hacking/IT IncidentArchived
586individuals
Unauthorized Access/DisclosureArchived
3,380individuals
TheftArchived
19,320individuals
Hacking/IT IncidentArchived
3,624individuals
Unauthorized Access/DisclosureArchived
831individuals
Unauthorized Access/DisclosureArchived
2,500individuals
Hacking/IT IncidentArchived
16,366individuals
Hacking/IT IncidentArchived
1,839individuals
Hacking/IT IncidentArchived
722individuals
Unauthorized Access/DisclosureArchived
1,449individuals
Unauthorized Access/DisclosureArchived
500individuals
TheftArchived
16,762individuals
Unauthorized Access/DisclosureArchived
1,112individuals
Hacking/IT IncidentArchived
26,942individuals
Unauthorized Access/DisclosureArchived
1,567individuals
Unauthorized Access/DisclosureArchived
500individuals
Unauthorized Access/DisclosureArchived
855individuals
Unauthorized Access/DisclosureArchived
1,541individuals
Unauthorized Access/DisclosureArchived
861individuals
Unauthorized Access/DisclosureArchived
565individuals
Hacking/IT IncidentArchived
6,510individuals
Hacking/IT IncidentArchived
1,494individuals
Unauthorized Access/DisclosureArchived
1,776individuals
Unauthorized Access/DisclosureArchived
3,200individuals
Hacking/IT IncidentArchived
516individuals
Unauthorized Access/DisclosureArchived
21,311individuals
Hacking/IT IncidentArchived
20,015individuals
Hacking/IT IncidentArchived
15,129individuals
Hacking/IT IncidentArchived
1,411individuals
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.