220,000individuals
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
5,911individuals
Hacking/IT IncidentArchived
1,371individuals
Hacking/IT IncidentArchived
117,957individuals
Hacking/IT IncidentArchived
5,466,931individuals
Hacking/IT IncidentArchived
6,892individuals
Hacking/IT IncidentArchived
67,443individuals
Unauthorized Access/DisclosureArchived
24,827individuals
Hacking/IT IncidentArchived
1,140,221individuals
Hacking/IT IncidentArchived
12,787individuals
Hacking/IT IncidentArchived
2,184individuals
Hacking/IT IncidentArchived
1,508individuals
Hacking/IT IncidentArchived
542individuals
Unauthorized Access/DisclosureArchived
25,650individuals
Hacking/IT IncidentUnder investigation
2,823individuals
Hacking/IT IncidentArchived
2,349individuals
Hacking/IT IncidentArchived
24,580individuals
Hacking/IT IncidentArchived
9,940individuals
TheftArchived
3,659individuals
Unauthorized Access/DisclosureArchived
655individuals
Unauthorized Access/DisclosureArchived
13,434individuals
Hacking/IT IncidentArchived
775,860individuals
Hacking/IT IncidentArchived
1,296individuals
Unauthorized Access/DisclosureArchived
14,435individuals
Unauthorized Access/DisclosureArchived
3,318individuals
Unauthorized Access/DisclosureArchived
1,875individuals
Unauthorized Access/DisclosureArchived
150,560individuals
Hacking/IT IncidentArchived
12,274individuals
Hacking/IT IncidentArchived
NY · Jun 25, 2024
The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester
Healthcare Provider
22,139individuals
Hacking/IT IncidentArchived
PA · Jun 21, 2024
Altoona Logan Township Mobile Medical Emergency Department Authority
Healthcare Provider
6,169individuals
Hacking/IT IncidentArchived
43,773individuals
Hacking/IT IncidentArchived
26,206individuals
Hacking/IT IncidentArchived
41,444individuals
Hacking/IT IncidentArchived
1,276,026individuals
Unauthorized Access/DisclosureArchived
700individuals
TheftArchived
1,100individuals
Hacking/IT IncidentArchived
312,867individuals
Hacking/IT IncidentArchived
15,196individuals
Hacking/IT IncidentArchived
19,150individuals
Hacking/IT IncidentArchived
88,044individuals
Hacking/IT IncidentArchived
7,021individuals
Hacking/IT IncidentArchived
985individuals
Unauthorized Access/DisclosureArchived
1,241individuals
Improper DisposalArchived
37,210individuals
Hacking/IT IncidentArchived
583,824individuals
Hacking/IT IncidentArchived
578individuals
Unauthorized Access/DisclosureArchived
18,182individuals
Hacking/IT IncidentArchived
1,267individuals
Unauthorized Access/DisclosureArchived
20,577individuals
Hacking/IT IncidentArchived
19,805individuals
Hacking/IT IncidentArchived
8,777individuals
Hacking/IT IncidentArchived
520individuals
Hacking/IT IncidentArchived
3,217individuals
Hacking/IT IncidentArchived
PA · Jun 11, 2024
WAREHOUSE EMPLOYEES LOCAL 169 CONTRIBUTING EMPLOYERS HEALTH & WELFARE FUND
Health Plan
1,061individuals
Hacking/IT IncidentArchived
6,566individuals
Hacking/IT IncidentArchived
2,739individuals
Unauthorized Access/DisclosureArchived
130,228individuals
Hacking/IT IncidentArchived
9,886individuals
Hacking/IT IncidentArchived
3,764individuals
Hacking/IT IncidentArchived
676individuals
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.