1,000individuals
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
6,877individuals
Hacking/IT IncidentArchived
133,714individuals
Hacking/IT IncidentArchived
343,593individuals
Hacking/IT IncidentArchived
96,814individuals
Hacking/IT IncidentArchived
557individuals
Hacking/IT IncidentArchived
25,610individuals
Hacking/IT IncidentArchived
1,059individuals
Unauthorized Access/DisclosureArchived
7,496individuals
Hacking/IT IncidentArchived
11,137individuals
Hacking/IT IncidentArchived
59,381individuals
Hacking/IT IncidentArchived
686individuals
Unauthorized Access/DisclosureArchived
17,842individuals
Hacking/IT IncidentArchived
1,650individuals
Unauthorized Access/DisclosureArchived
461,070individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
4,041individuals
Hacking/IT IncidentArchived
17,000individuals
Hacking/IT IncidentArchived
1,700individuals
Hacking/IT IncidentArchived
942,138individuals
Hacking/IT IncidentArchived
3,307individuals
Hacking/IT IncidentArchived
1,100individuals
Unauthorized Access/DisclosureArchived
1,337individuals
Hacking/IT IncidentArchived
31,573individuals
Hacking/IT IncidentArchived
101,541individuals
Hacking/IT IncidentArchived
2,203individuals
Hacking/IT IncidentArchived
591individuals
LossArchived
1,707individuals
Hacking/IT IncidentArchived
16,475individuals
Hacking/IT IncidentArchived
21,114individuals
Hacking/IT IncidentArchived
11,330individuals
Hacking/IT IncidentArchived
325,278individuals
Hacking/IT IncidentArchived
197,507individuals
Hacking/IT IncidentArchived
4,112,892individuals
Hacking/IT IncidentArchived
8,071individuals
Hacking/IT IncidentArchived
20,642individuals
Hacking/IT IncidentArchived
3,717individuals
Hacking/IT IncidentArchived
791individuals
Hacking/IT IncidentArchived
2,188individuals
Unauthorized Access/DisclosureArchived
1,457individuals
Hacking/IT IncidentArchived
2,400individuals
Hacking/IT IncidentArchived
3,805individuals
Hacking/IT IncidentArchived
1,116individuals
Hacking/IT IncidentArchived
9,424individuals
Unauthorized Access/DisclosureArchived
1,607individuals
Hacking/IT IncidentArchived
5,004individuals
Hacking/IT IncidentArchived
2,877individuals
Hacking/IT IncidentArchived
11,938individuals
Hacking/IT IncidentArchived
4,614individuals
Hacking/IT IncidentArchived
4,447individuals
Hacking/IT IncidentArchived
1,079individuals
Hacking/IT IncidentArchived
1,508individuals
Hacking/IT IncidentArchived
17,161individuals
Hacking/IT IncidentArchived
30,560individuals
Unauthorized Access/DisclosureArchived
8,702individuals
Hacking/IT IncidentArchived
362,833individuals
Hacking/IT IncidentArchived
1,178individuals
Unauthorized Access/DisclosureArchived
2,236individuals
Hacking/IT IncidentArchived
28,913individuals
Hacking/IT IncidentArchived
20,734individuals
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.