97,132individuals
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
5,175individuals
Hacking/IT IncidentArchived
4,264individuals
Hacking/IT IncidentArchived
13,584individuals
Hacking/IT IncidentArchived
5,538individuals
Hacking/IT IncidentArchived
1,412individuals
LossArchived
5,314individuals
Hacking/IT IncidentArchived
7,127individuals
Hacking/IT IncidentArchived
7,185individuals
Hacking/IT IncidentArchived
12,779individuals
Hacking/IT IncidentArchived
6,211individuals
Hacking/IT IncidentArchived
6,491individuals
Hacking/IT IncidentArchived
1,200individuals
Hacking/IT IncidentArchived
32,156individuals
Hacking/IT IncidentArchived
105,387individuals
Hacking/IT IncidentArchived
94,807individuals
Hacking/IT IncidentArchived
2,062individuals
Hacking/IT IncidentArchived
1,640individuals
Hacking/IT IncidentArchived
484,000individuals
Hacking/IT IncidentArchived
2,654individuals
Unauthorized Access/DisclosureArchived
19,373individuals
Hacking/IT IncidentArchived
1,111individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
3,097individuals
Hacking/IT IncidentArchived
31,679individuals
Hacking/IT IncidentArchived
10,853individuals
Hacking/IT IncidentArchived
599individuals
Unauthorized Access/DisclosureArchived
16,341individuals
Hacking/IT IncidentArchived
1,166individuals
Hacking/IT IncidentArchived
OR · Nov 28, 2023
Columbia County Child Abuse Assessment Center dba The Amani Center
Healthcare Provider
760individuals
Hacking/IT IncidentArchived
9,240individuals
Hacking/IT IncidentArchived
10,890individuals
Hacking/IT IncidentArchived
4,853individuals
Hacking/IT IncidentArchived
2,495individuals
TheftArchived
597individuals
Hacking/IT IncidentArchived
3,169individuals
Unauthorized Access/DisclosureArchived
122,488individuals
Hacking/IT IncidentArchived
605,809individuals
Hacking/IT IncidentArchived
1,647individuals
Hacking/IT IncidentArchived
950individuals
Hacking/IT IncidentArchived
10,063individuals
Hacking/IT IncidentArchived
CA · Nov 22, 2023
Sierra County Department of Public Health, Department of Behavioral Health
Healthcare Provider
2,463individuals
Hacking/IT IncidentArchived
1,250individuals
Hacking/IT IncidentArchived
2,068,426individuals
Hacking/IT IncidentArchived
12,677individuals
Hacking/IT IncidentArchived
958individuals
Hacking/IT IncidentArchived
16,113individuals
Hacking/IT IncidentArchived
48,261individuals
Hacking/IT IncidentArchived
1,477individuals
Hacking/IT IncidentArchived
437,392individuals
Hacking/IT IncidentArchived
CA · Nov 17, 2023
Blue Shield of California OR Blue Shield of California Promise Health Plan
Business Associate
27,832individuals
Hacking/IT IncidentArchived
636,849individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentArchived
1,523individuals
Hacking/IT IncidentArchived
20,777individuals
Hacking/IT IncidentArchived
40,000individuals
Hacking/IT IncidentArchived
18,255individuals
Hacking/IT IncidentArchived
2,421individuals
Unauthorized Access/DisclosureArchived
376,504individuals
Hacking/IT IncidentArchived
26,000individuals
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.