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

NC · Oct 19, 2021

UNC Hospitals

Healthcare Provider

719individuals

Unauthorized Access/DisclosureArchived

NY · Oct 17, 2021

Family of Woodstock

Healthcare Provider

8,214individuals

Hacking/IT IncidentArchived

IN · Oct 15, 2021

Anthem Inc.

Health Plan

2,023individuals

Hacking/IT IncidentArchived

WA · Oct 15, 2021

Limeade, Inc.

Business Associate

2,287individuals

Unauthorized Access/DisclosureArchived

NY · Oct 14, 2021

Syracuse ASC, LLC

Healthcare Provider

24,891individuals

Hacking/IT IncidentArchived

KY · Oct 12, 2021

Humana Inc

Health Plan

4,424individuals

Hacking/IT IncidentArchived

NJ · Oct 8, 2021

University Hospital

Healthcare Provider

9,329individuals

Unauthorized Access/DisclosureArchived

IN · Oct 1, 2021

Eskenazi Health

Healthcare Provider

1,515,918individuals

Hacking/IT IncidentArchived

PA · Oct 1, 2021

NADG Hopewell, Inc.

Healthcare Provider

1,143individuals

Hacking/IT IncidentArchived

KY · Sep 28, 2021

Humana Inc

Health Plan

948individuals

Unauthorized Access/DisclosureArchived

TX · Sep 24, 2021

The Menninger Clinic

Healthcare Provider

1,365individuals

Hacking/IT IncidentArchived

CT · Sep 22, 2021

Aetna ACE

Health Plan

1,011individuals

Hacking/IT IncidentArchived

FL · Sep 21, 2021

Cerebral Medical Group

Healthcare Provider

875individuals

Unauthorized Access/DisclosureArchived

PA · Sep 17, 2021

Horizon House, Inc.

Healthcare Provider

27,823individuals

Hacking/IT IncidentArchived

MN · Sep 16, 2021

Mankato Clinic

Healthcare Provider

535individuals

Unauthorized Access/DisclosureArchived

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.