899individuals
Hacking/IT IncidentArchived
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
648individuals
Hacking/IT IncidentArchived
668individuals
Hacking/IT IncidentArchived
610individuals
Hacking/IT IncidentArchived
3,994individuals
Hacking/IT IncidentArchived
760individuals
Unauthorized Access/DisclosureArchived
640,436individuals
Hacking/IT IncidentArchived
6,741individuals
Hacking/IT IncidentArchived
1,281individuals
Hacking/IT IncidentArchived
696individuals
Hacking/IT IncidentArchived
20,787individuals
Hacking/IT IncidentArchived
2,340individuals
LossArchived
2,543individuals
Hacking/IT IncidentArchived
885individuals
Hacking/IT IncidentArchived
5,000individuals
Unauthorized Access/DisclosureArchived
1,269,074individuals
Hacking/IT IncidentArchived
76,661individuals
Hacking/IT IncidentArchived
11,988individuals
Unauthorized Access/DisclosureArchived
189,761individuals
Hacking/IT IncidentArchived
16,089individuals
Unauthorized Access/DisclosureArchived
16,559individuals
Hacking/IT IncidentArchived
2,500individuals
Hacking/IT IncidentArchived
1,122individuals
Unauthorized Access/DisclosureArchived
7,102individuals
Hacking/IT IncidentArchived
4,073individuals
Hacking/IT IncidentArchived
50,410individuals
Hacking/IT IncidentArchived
3,708individuals
Hacking/IT IncidentArchived
3,951individuals
Hacking/IT IncidentArchived
3,259individuals
Hacking/IT IncidentArchived
66,874individuals
Hacking/IT IncidentArchived
2,850individuals
Hacking/IT IncidentArchived
1,020individuals
Unauthorized Access/DisclosureArchived
682individuals
Unauthorized Access/DisclosureArchived
3,443individuals
Unauthorized Access/DisclosureArchived
518individuals
Unauthorized Access/DisclosureArchived
606individuals
Unauthorized Access/DisclosureArchived
3,429individuals
Unauthorized Access/DisclosureArchived
3,748individuals
Unauthorized Access/DisclosureArchived
5,707individuals
Hacking/IT IncidentArchived
56,953individuals
Hacking/IT IncidentArchived
1,634individuals
Unauthorized Access/DisclosureArchived
759individuals
Unauthorized Access/DisclosureArchived
138,402individuals
Hacking/IT IncidentArchived
1,223individuals
Hacking/IT IncidentArchived
6,978individuals
Hacking/IT IncidentArchived
5,514individuals
Hacking/IT IncidentArchived
912individuals
Hacking/IT IncidentArchived
484,157individuals
Hacking/IT IncidentArchived
73,825individuals
Hacking/IT IncidentArchived
3,317individuals
Unauthorized Access/DisclosureArchived
418,842individuals
Hacking/IT IncidentArchived
8,182individuals
Hacking/IT IncidentArchived
36,812individuals
Hacking/IT IncidentArchived
1,340individuals
Hacking/IT IncidentArchived
137,110individuals
Hacking/IT IncidentArchived
536individuals
Unauthorized Access/DisclosureArchived
149,804individuals
Hacking/IT IncidentArchived
6,800individuals
Hacking/IT IncidentArchived
114,834individuals
Hacking/IT IncidentArchived
1,442,997individuals
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.