34,675individuals
Improper DisposalArchived
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
5,509individuals
Hacking/IT IncidentArchived
1,361,735individuals
Hacking/IT IncidentArchived
1,123individuals
Hacking/IT IncidentArchived
86,414individuals
Hacking/IT IncidentArchived
15,644individuals
Hacking/IT IncidentArchived
32,548individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentUnder investigation
549individuals
Unauthorized Access/DisclosureUnder investigation
48,151individuals
Hacking/IT IncidentArchived
3,561individuals
Unauthorized Access/DisclosureUnder investigation
437,329individuals
Hacking/IT IncidentUnder investigation
38,401individuals
Hacking/IT IncidentUnder investigation
3,502individuals
Hacking/IT IncidentUnder investigation
4,955individuals
Unauthorized Access/DisclosureArchived
501individuals
Hacking/IT IncidentArchived
1,820individuals
Hacking/IT IncidentUnder investigation
26,469individuals
Hacking/IT IncidentUnder investigation
22,215individuals
Hacking/IT IncidentUnder investigation
42,962individuals
Hacking/IT IncidentArchived
650individuals
Hacking/IT IncidentArchived
22,541individuals
Hacking/IT IncidentUnder investigation
2,583individuals
Hacking/IT IncidentArchived
4,708individuals
Hacking/IT IncidentArchived
845individuals
Hacking/IT IncidentArchived
1,800individuals
Unauthorized Access/DisclosureUnder investigation
49,303individuals
Hacking/IT IncidentArchived
357,265individuals
Hacking/IT IncidentArchived
28,968individuals
Hacking/IT IncidentArchived
262,831individuals
Hacking/IT IncidentArchived
1,268individuals
Hacking/IT IncidentArchived
1,152individuals
Unauthorized Access/DisclosureArchived
75,476individuals
Hacking/IT IncidentArchived
5,694individuals
Hacking/IT IncidentArchived
500individuals
Unauthorized Access/DisclosureUnder investigation
986individuals
Hacking/IT IncidentArchived
3,403individuals
Hacking/IT IncidentArchived
2,253individuals
Hacking/IT IncidentArchived
960individuals
Hacking/IT IncidentArchived
908individuals
Unauthorized Access/DisclosureArchived
93,589individuals
Hacking/IT IncidentArchived
5,565individuals
Unauthorized Access/DisclosureArchived
237,830individuals
Hacking/IT IncidentUnder investigation
639individuals
Hacking/IT IncidentArchived
258,191individuals
Hacking/IT IncidentArchived
6,903individuals
Unauthorized Access/DisclosureArchived
1,020individuals
Unauthorized Access/DisclosureArchived
12,086individuals
Unauthorized Access/DisclosureArchived
2,944individuals
Unauthorized Access/DisclosureArchived
1,002individuals
Hacking/IT IncidentUnder investigation
118,028individuals
Hacking/IT IncidentUnder investigation
13,954individuals
Hacking/IT IncidentUnder investigation
1,861individuals
Unauthorized Access/DisclosureUnder investigation
31,124individuals
Hacking/IT IncidentUnder investigation
63,453individuals
Hacking/IT IncidentArchived
5,556,702individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentUnder investigation
6,270individuals
Hacking/IT IncidentArchived
21,467individuals
Hacking/IT IncidentArchived
3,193individuals
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.