1,300individuals
LossArchived
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
2,124individuals
Unauthorized Access/DisclosureArchived
1,723individuals
Unauthorized Access/DisclosureArchived
500individuals
Unauthorized Access/DisclosureArchived
40,051individuals
Hacking/IT IncidentUnder investigation
10,182individuals
Hacking/IT IncidentArchived
15,027individuals
Hacking/IT IncidentArchived
17,800individuals
Hacking/IT IncidentUnder investigation
35,952individuals
Hacking/IT IncidentUnder investigation
2,742individuals
Unauthorized Access/DisclosureArchived
4,285individuals
Hacking/IT IncidentUnder investigation
817individuals
Hacking/IT IncidentUnder investigation
108,967individuals
Hacking/IT IncidentUnder investigation
22,600individuals
Hacking/IT IncidentArchived
3,682individuals
TheftUnder investigation
629individuals
Unauthorized Access/DisclosureArchived
1,260individuals
Unauthorized Access/DisclosureArchived
57,655individuals
Hacking/IT IncidentUnder investigation
55,000individuals
Hacking/IT IncidentArchived
209,560individuals
Hacking/IT IncidentUnder investigation
1,680individuals
Unauthorized Access/DisclosureArchived
976individuals
Hacking/IT IncidentUnder investigation
200,000individuals
Hacking/IT IncidentUnder investigation
14,369individuals
Hacking/IT IncidentArchived
501individuals
Unauthorized Access/DisclosureArchived
362,713individuals
Hacking/IT IncidentUnder investigation
4,213individuals
Hacking/IT IncidentUnder investigation
1,658individuals
Unauthorized Access/DisclosureArchived
1,195individuals
Hacking/IT IncidentUnder investigation
1,000individuals
Hacking/IT IncidentUnder investigation
1,446individuals
Hacking/IT IncidentArchived
9,536individuals
Hacking/IT IncidentUnder investigation
5,615individuals
Hacking/IT IncidentArchived
5,013individuals
Hacking/IT IncidentArchived
1,310individuals
Hacking/IT IncidentUnder investigation
6,547individuals
Unauthorized Access/DisclosureUnder investigation
9,809individuals
Hacking/IT IncidentUnder investigation
7,382individuals
Hacking/IT IncidentArchived
1,251individuals
Unauthorized Access/DisclosureArchived
5,000individuals
Unauthorized Access/DisclosureUnder investigation
2,607individuals
Hacking/IT IncidentArchived
88,000individuals
Hacking/IT IncidentArchived
17,979individuals
Hacking/IT IncidentUnder investigation
43,728individuals
Hacking/IT IncidentArchived
6,633individuals
Hacking/IT IncidentArchived
198,795individuals
Hacking/IT IncidentUnder investigation
68,111individuals
Hacking/IT IncidentArchived
5,617individuals
Hacking/IT IncidentArchived
6,588individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
1,093individuals
Unauthorized Access/DisclosureArchived
500individuals
Hacking/IT IncidentUnder investigation
2,329individuals
Unauthorized Access/DisclosureArchived
21,265individuals
Unauthorized Access/DisclosureArchived
2,000individuals
Unauthorized Access/DisclosureArchived
28,515individuals
Hacking/IT IncidentUnder investigation
1,483individuals
Hacking/IT IncidentUnder investigation
62,224,658individuals
Hacking/IT IncidentUnder investigation
13,300individuals
Hacking/IT IncidentUnder investigation
579individuals
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.