994individuals
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
2,091individuals
Hacking/IT IncidentArchived
5,983individuals
Hacking/IT IncidentArchived
70,822individuals
Unauthorized Access/DisclosureArchived
5,396individuals
Unauthorized Access/DisclosureArchived
8,816individuals
Hacking/IT IncidentArchived
1,435individuals
Unauthorized Access/DisclosureArchived
12,081individuals
Hacking/IT IncidentArchived
725individuals
Hacking/IT IncidentArchived
100,487individuals
Hacking/IT IncidentArchived
900individuals
Unauthorized Access/DisclosureArchived
941individuals
Hacking/IT IncidentArchived
1,545individuals
Hacking/IT IncidentArchived
2,121individuals
Unauthorized Access/DisclosureArchived
1,673individuals
LossArchived
64,654individuals
Unauthorized Access/DisclosureArchived
500individuals
Hacking/IT IncidentArchived
47,178individuals
Hacking/IT IncidentArchived
2,710individuals
TheftArchived
1,094individuals
TheftArchived
4,500individuals
Hacking/IT IncidentArchived
1,639individuals
Hacking/IT IncidentArchived
4,122individuals
Hacking/IT IncidentArchived
1,474,284individuals
Hacking/IT IncidentArchived
49,636individuals
Hacking/IT IncidentArchived
877individuals
Unauthorized Access/DisclosureArchived
9,023individuals
Hacking/IT IncidentArchived
37,423individuals
Hacking/IT IncidentArchived
64,710individuals
Hacking/IT IncidentArchived
1,152individuals
Hacking/IT IncidentArchived
7,771individuals
Hacking/IT IncidentArchived
674individuals
Hacking/IT IncidentArchived
1,454individuals
Unauthorized Access/DisclosureArchived
79,100individuals
Hacking/IT IncidentArchived
2,644individuals
Hacking/IT IncidentArchived
29,982individuals
Hacking/IT IncidentArchived
7,937individuals
Hacking/IT IncidentArchived
36,086individuals
Hacking/IT IncidentArchived
18,900individuals
Hacking/IT IncidentArchived
3,640individuals
Unauthorized Access/DisclosureArchived
15,600individuals
Hacking/IT IncidentArchived
7,200individuals
Hacking/IT IncidentArchived
25,728individuals
Unauthorized Access/DisclosureArchived
11,056individuals
Hacking/IT IncidentArchived
3,802individuals
Hacking/IT IncidentArchived
50,000individuals
Hacking/IT IncidentArchived
6,000individuals
Hacking/IT IncidentArchived
2,428individuals
Hacking/IT IncidentArchived
18,477individuals
Unauthorized Access/DisclosureArchived
8,687individuals
Hacking/IT IncidentArchived
3,500,000individuals
Hacking/IT IncidentArchived
2,254individuals
Hacking/IT IncidentArchived
1,670individuals
Unauthorized Access/DisclosureArchived
1,863individuals
Unauthorized Access/DisclosureArchived
15,429individuals
Hacking/IT IncidentArchived
600individuals
Unauthorized Access/DisclosureArchived
13,759individuals
Hacking/IT IncidentArchived
1,680individuals
Unauthorized Access/DisclosureArchived
1,800individuals
Hacking/IT IncidentArchived
1,248individuals
Unauthorized Access/DisclosureArchived
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.