24,341individuals
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
1,524individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
110,304individuals
Hacking/IT IncidentUnder investigation
1,740individuals
Hacking/IT IncidentArchived
1,800,000individuals
Hacking/IT IncidentUnder investigation
621individuals
Hacking/IT IncidentArchived
6,086individuals
Hacking/IT IncidentArchived
24,122individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
501individuals
Hacking/IT IncidentUnder investigation
5,208individuals
Hacking/IT IncidentArchived
8,941individuals
Hacking/IT IncidentArchived
708individuals
Hacking/IT IncidentArchived
5,800individuals
Hacking/IT IncidentUnder investigation
2,151,330individuals
Hacking/IT IncidentUnder investigation
500individuals
Hacking/IT IncidentUnder investigation
90,000individuals
Hacking/IT IncidentUnder investigation
3,043individuals
Hacking/IT IncidentUnder investigation
2,042individuals
Hacking/IT IncidentArchived
6,173individuals
Hacking/IT IncidentArchived
716,000individuals
Hacking/IT IncidentUnder investigation
10,000individuals
Hacking/IT IncidentUnder investigation
538individuals
TheftUnder investigation
16,991individuals
Hacking/IT IncidentArchived
566individuals
Hacking/IT IncidentArchived
1,575individuals
Hacking/IT IncidentArchived
687individuals
Unauthorized Access/DisclosureUnder investigation
3,849individuals
Hacking/IT IncidentArchived
3,651individuals
Hacking/IT IncidentUnder investigation
600individuals
Hacking/IT IncidentUnder investigation
1,331individuals
Hacking/IT IncidentArchived
22,017individuals
Hacking/IT IncidentUnder investigation
2,740individuals
Unauthorized Access/DisclosureUnder investigation
1,283individuals
Unauthorized Access/DisclosureArchived
4,234individuals
Hacking/IT IncidentArchived
6,746individuals
Hacking/IT IncidentArchived
96,271individuals
Hacking/IT IncidentArchived
19,408individuals
Hacking/IT IncidentUnder investigation
949individuals
Hacking/IT IncidentArchived
613individuals
Hacking/IT IncidentArchived
597individuals
Hacking/IT IncidentArchived
1,574individuals
Hacking/IT IncidentUnder investigation
5,385individuals
Hacking/IT IncidentUnder investigation
5,086individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentUnder investigation
6,400individuals
Hacking/IT IncidentUnder investigation
19,971individuals
Hacking/IT IncidentUnder investigation
10,666individuals
Hacking/IT IncidentUnder investigation
2,063individuals
Hacking/IT IncidentArchived
5,073individuals
Hacking/IT IncidentUnder investigation
58,000individuals
Hacking/IT IncidentUnder investigation
285,086individuals
Hacking/IT IncidentUnder investigation
146,108individuals
Hacking/IT IncidentUnder investigation
8,918individuals
Hacking/IT IncidentUnder investigation
15,000individuals
Hacking/IT IncidentArchived
648individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentUnder investigation
1,522individuals
Hacking/IT IncidentUnder investigation
4,717individuals
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.