611,743individuals
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
14,503individuals
Hacking/IT IncidentArchived
1,797individuals
Hacking/IT IncidentArchived
2,767individuals
Hacking/IT IncidentArchived
771individuals
Hacking/IT IncidentArchived
2,500individuals
Hacking/IT IncidentArchived
284,326individuals
Hacking/IT IncidentArchived
13,516individuals
Hacking/IT IncidentArchived
59,861individuals
Hacking/IT IncidentArchived
2,886individuals
Hacking/IT IncidentArchived
500individuals
TheftArchived
672individuals
Hacking/IT IncidentArchived
3,396individuals
Unauthorized Access/DisclosureArchived
3,414individuals
Hacking/IT IncidentArchived
50,034individuals
Hacking/IT IncidentArchived
26,793individuals
Hacking/IT IncidentArchived
65,482individuals
Hacking/IT IncidentArchived
1,125individuals
Hacking/IT IncidentArchived
1,348individuals
Unauthorized Access/DisclosureArchived
484,957individuals
Hacking/IT IncidentArchived
3,000individuals
Hacking/IT IncidentArchived
1,597individuals
Unauthorized Access/DisclosureArchived
6,836individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
2,652individuals
Hacking/IT IncidentArchived
84,329individuals
Hacking/IT IncidentArchived
2,547individuals
Hacking/IT IncidentArchived
39,282individuals
Hacking/IT IncidentArchived
500individuals
Improper DisposalArchived
16,121individuals
Hacking/IT IncidentArchived
10,480individuals
Hacking/IT IncidentArchived
3,392individuals
Unauthorized Access/DisclosureArchived
65,466individuals
Hacking/IT IncidentArchived
42,077individuals
Hacking/IT IncidentArchived
104,234individuals
Hacking/IT IncidentArchived
56,989individuals
Hacking/IT IncidentArchived
1,642individuals
Hacking/IT IncidentArchived
CA · Mar 7, 2024
CDC Dental Management, Co., LLC dba Kids Care Dental & Orthodontics
Healthcare Provider
1,286individuals
Hacking/IT IncidentArchived
109,684individuals
Hacking/IT IncidentArchived
1,759individuals
Hacking/IT IncidentArchived
650individuals
TheftArchived
TN · Mar 5, 2024
BlueCross BlueShield of Tennessee, Inc. and Volunteer State Health Plan, Inc. d/b/a BlueCare Plus Tennessee
Health Plan
1,251individuals
Hacking/IT IncidentArchived
9,850individuals
Unauthorized Access/DisclosureArchived
85,902individuals
Hacking/IT IncidentArchived
1,505individuals
Hacking/IT IncidentArchived
537individuals
Hacking/IT IncidentArchived
457,152individuals
Hacking/IT IncidentArchived
1,138individuals
Hacking/IT IncidentArchived
235,249individuals
Hacking/IT IncidentArchived
2,398individuals
Hacking/IT IncidentArchived
181,820individuals
Hacking/IT IncidentArchived
4,211individuals
Hacking/IT IncidentArchived
886,746individuals
Hacking/IT IncidentArchived
83,543individuals
Hacking/IT IncidentArchived
48,802individuals
Hacking/IT IncidentArchived
2,191individuals
Hacking/IT IncidentArchived
12,614individuals
Unauthorized Access/DisclosureArchived
5,548individuals
TheftArchived
708individuals
Hacking/IT IncidentArchived
177,101individuals
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.