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.
5,369
Disclosures in the tracker, all years
2,083
Of those, indexed in 2026
146
Added in October
23
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 30 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
Critical21 Sep 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company breach exposed personal data of 1.2 million individuals
21 Sep 2026
Critical18 Sep 2026
ApolloMD
Healthcare · 626,000 records
626,000 individuals impacted by data breach
18 Sep 2026
Critical18 Sep 2026
McLaren Health Care
Healthcare · Records not stated
740,000+ records stolen in ransomware attack
18 Sep 2026
Critical18 Sep 2026
Welltok
Healthcare · 14,760,000 records
14.76 million individuals affected by MOVEit Transfer data breach in 2023
18 Sep 2026
Critical18 Sep 2026
MCBS
Healthcare · 1,200,000 records
Atlanta-based medical business management company data breach affecting 1.2 million individuals
18 Sep 2026
High18 Sep 2026
Highland Oncology Group
Healthcare · Records not stated
2025 ransomware attack on Arkansas-based cancer care practice, litigation settled
18 Sep 2026
Critical18 Sep 2026
Trizetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized IT environment access exposed PHI of 3.4 million individuals
18 Sep 2026
Critical17 Sep 2026
ApolloMD
Healthcare · 626,000 records
Data breach impacting 626,000 individuals
17 Sep 2026
Critical17 Sep 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
South African government healthcare lab network impacted by ransomware attack affecting laboratory services
17 Sep 2026
High17 Sep 2026
CommonSpirit Health
Healthcare · 19,027 records
Data breach exposed medical and personal data of 19,027 individuals
17 Sep 2026
Critical17 Sep 2026
McLaren Health Care
Healthcare · 3,200,000 records
Ransomware attacks in 2023 and 2024 exposed 3.2 million patient records
17 Sep 2026
High17 Sep 2026
Veradigm
Healthcare · Records not stated
Electronic health record company suffered vendor breach exposing customer data
17 Sep 2026
Critical17 Sep 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company breach exposed 1.2 million individuals' personal data
17 Sep 2026
Critical17 Sep 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
PHI of 3.4M individuals exposed via unauthorized IT environment access
17 Sep 2026
Critical16 Sep 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Mike Stimpson reports: Some patient services may be affected as the general hospital in Nipigon responds to what it describes as a “cyber security incident.” An incident involving ransomware affected information…
16 Sep 2026
High16 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
Ransomware attack exposing patient and family data
16 Sep 2026
High16 Sep 2026
University of Hawaiʻi Cancer Center
Healthcare · Records not stated
Data leak following ransomware attack
16 Sep 2026
Critical16 Sep 2026
Conduent
Healthcare · Records not stated
Ransomware breach stealing 8TB of files from document processing company affecting healthcare sector
16 Sep 2026
Critical16 Sep 2026
Welltok
Healthcare · 14,760,000 records
MOVEit Transfer breach affecting 14.76 million individuals in healthcare/patient data
16 Sep 2026
High15 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
2024 ransomware attack affecting patients and families
15 Sep 2026
Critical15 Sep 2026
ApolloMD
Healthcare · 626,000 records
Data breach impacted 626,000 individuals
15 Sep 2026
Critical15 Sep 2026
Blue Shield of California
Healthcare · 4,700,000 records
Data breach impacted 4.7 million people
15 Sep 2026
High15 Sep 2026
Covenant Health
Healthcare · 480,000 records
Data breach impacted nearly 480,000 patients' medical and personal information
15 Sep 2026
High15 Sep 2026
University of Hawaiʻi Cancer Center
Healthcare · Records not stated
Data leak following ransomware attack exposed patient medical records
15 Sep 2026
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