153,174individuals
Hacking/IT IncidentUnder investigation
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
1,918individuals
Hacking/IT IncidentUnder investigation
15,749individuals
Hacking/IT IncidentUnder investigation
15,000,000individuals
Hacking/IT IncidentUnder investigation
MA · Jul 16, 2026
Lifespan Physician Group of Massachusetts, Inc. d/b/a Brown Health Medical Group-MA
Healthcare Provider
311,760individuals
Hacking/IT IncidentUnder investigation
12,490individuals
Hacking/IT IncidentUnder investigation
728individuals
Unauthorized Access/DisclosureUnder investigation
2,641individuals
Unauthorized Access/DisclosureArchived
500individuals
Hacking/IT IncidentUnder investigation
150,810individuals
Hacking/IT IncidentUnder investigation
689individuals
Hacking/IT IncidentUnder investigation
800individuals
Unauthorized Access/DisclosureArchived
1,680individuals
Unauthorized Access/DisclosureArchived
9,380individuals
Hacking/IT IncidentUnder investigation
52,562individuals
Hacking/IT IncidentUnder investigation
41,569individuals
Hacking/IT IncidentUnder investigation
675individuals
Hacking/IT IncidentUnder investigation
3,809individuals
Hacking/IT IncidentUnder investigation
5,459individuals
Hacking/IT IncidentUnder investigation
3,400individuals
Hacking/IT IncidentUnder investigation
1,012individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
1,530individuals
Unauthorized Access/DisclosureUnder investigation
548individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
24,496individuals
Hacking/IT IncidentUnder investigation
9,909individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
4,237individuals
Unauthorized Access/DisclosureArchived
167,617individuals
Hacking/IT IncidentUnder investigation
1,556individuals
Hacking/IT IncidentUnder investigation
8,157individuals
Unauthorized Access/DisclosureArchived
5,891individuals
Hacking/IT IncidentUnder investigation
602individuals
Hacking/IT IncidentUnder investigation
8,600individuals
Unauthorized Access/DisclosureUnder investigation
29,774individuals
Hacking/IT IncidentUnder investigation
1,549individuals
Unauthorized Access/DisclosureArchived
13,723individuals
Hacking/IT IncidentUnder investigation
1,562individuals
Hacking/IT IncidentArchived
1,261,464individuals
Hacking/IT IncidentUnder investigation
1,718individuals
Hacking/IT IncidentUnder investigation
66,422individuals
Hacking/IT IncidentUnder investigation
1,347individuals
Unauthorized Access/DisclosureArchived
145,714individuals
Hacking/IT IncidentUnder investigation
750individuals
Hacking/IT IncidentUnder investigation
169,626individuals
Hacking/IT IncidentUnder investigation
878individuals
Hacking/IT IncidentUnder investigation
22,172individuals
Hacking/IT IncidentUnder investigation
1,799individuals
Unauthorized Access/DisclosureArchived
2,313individuals
Unauthorized Access/DisclosureArchived
90,000individuals
Hacking/IT IncidentUnder investigation
7,000individuals
Unauthorized Access/DisclosureArchived
500individuals
Hacking/IT IncidentUnder investigation
1,444individuals
Hacking/IT IncidentArchived
68,212individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
30,830individuals
Hacking/IT IncidentUnder investigation
21,027individuals
Unauthorized Access/DisclosureArchived
2,045individuals
Hacking/IT IncidentUnder investigation
37,384individuals
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.