Disclosure tracker › Healthcare disclosures
Intelligence · Disclosure tracker
Healthcare disclosures
Public breach disclosures from regulators, court filings, company notices and news reporting, each recorded with its date and a link to the original. Updated daily.
5,582
Disclosures in the tracker, all years
2,082
Of those, indexed in 2026
146
Added in October
21
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 31 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
5,552 results · Healthcare disclosures. Clear filters
High15 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach affecting nearly 170,000 individuals
15 Aug 2026
Critical15 Aug 2026
Medical Billing Company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposing sensitive health data on 1.3 million people
15 Aug 2026
Critical15 Aug 2026
Change Healthcare
Healthcare · 100,000,000 records
2024 ransomware attack affecting UnitedHealth Group subsidiary
15 Aug 2026
Critical15 Aug 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized access exposed PHI of 3.4 million individuals
15 Aug 2026
Critical15 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company data breach exposed 1.2 million individuals' personal information
15 Aug 2026
High14 Aug 2026
Clover Health
Healthcare · Records not stated
Data breach disclosed in securities filing; type and scope of exposed data not yet determined
14 Aug 2026
Critical14 Aug 2026
Abbott Laboratories
Healthcare · 30,000,000 records
30M+ customer rows stolen by ShinyHunters
14 Aug 2026
High14 Aug 2026
American Addiction Centers
Healthcare · Records not stated
SSNs and health data stolen from Salesforce
14 Aug 2026
Critical14 Aug 2026
American Addiction Centers
Healthcare · Records not stated
SSNs and health data from Salesforce breach
14 Aug 2026
Critical14 Aug 2026
Change Healthcare (UnitedHealth Group)
Healthcare · 100,000,000 records
2024 ransomware attack exposed millions of patients' health and insurance data
14 Aug 2026
Critical14 Aug 2026
Abbott Exact Sciences
Healthcare · 10,900,000 records
10.9M emails and health records dumped publicly
14 Aug 2026
Critical14 Aug 2026
Abbott Cancer Diagnostics
Healthcare · 10,900,000 records
10.9M emails and health records dumped
14 Aug 2026
High14 Aug 2026
Philips Healthcare Tech
Healthcare · Records not stated
13.5GB blueprints and diagrams exfiltrated by Cl0p
14 Aug 2026
High14 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Patient health information compromised in 2025 breach affecting hospital system
14 Aug 2026
High14 Aug 2026
NHS
Healthcare · 900,000 records
STILL, NHS? Martin Bagot reports: The NHS has admitted a data breach by sending patients’ personal information over pager devices. A BBC investigation found sensitive medical data of transplant patients was routinely…
14 Aug 2026
Critical13 Aug 2026
Unnamed medical billing company
Healthcare · 1,300,000 records
Ransomware attack exposing protected health data on 1.3 million people
13 Aug 2026
High13 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Personal and medical information including SSNs exposed in data breach
13 Aug 2026
Critical13 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company data breach affecting 1.2 million individuals with personal information exposed
13 Aug 2026
Critical13 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Patient data compromised in 2025 Cerner breach, ongoing class action lawsuit
13 Aug 2026
High13 Aug 2026
Clover Health
Healthcare · Records not stated
Data breach disclosed in securities filing; type and extent of exposed data not yet determined
13 Aug 2026
High13 Aug 2026
WellPoint Texas
Healthcare · Records not stated
Data breach exposed personal information; class action investigation launched
13 Aug 2026
Critical13 Aug 2026
Polish Patient Records Platform
Healthcare · Records not stated
19M medical records stolen in cyberattack
13 Aug 2026
Critical13 Aug 2026
Blue Cross-Blue Shield
Healthcare · Records not stated
Massive data breach; company allegedly knew about breach and delayed reporting
13 Aug 2026
Critical13 Aug 2026
Cerner (Huntsville Hospital)
Healthcare · Records not stated
Patient data compromised in 2025 breach affecting Huntsville Hospital Health System
13 Aug 2026
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