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
Critical24 Sep 2026
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed sensitive data from millions of patients including health and insurance information.
24 Sep 2026
High24 Sep 2026
AnMed
Healthcare · Records not stated
Cyberattack on nonprofit health system forced facility closures and limited operational capacity
24 Sep 2026
High23 Sep 2026
Centers Laboratory
Healthcare · 540,000 records
Data breach affecting 540,000 individuals
23 Sep 2026
High23 Sep 2026
Covenant Health
Healthcare · 480,000 records
Nearly 480,000 people impacted in data breach
23 Sep 2026
Critical23 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
23 Sep 2026
High23 Sep 2026
Bedfordshire Hospital
Healthcare · Records not stated
Cyber attack exposed patient names, NHS numbers and test results
23 Sep 2026
High23 Sep 2026
Essex NHS Trust
Healthcare · 900,000 records
NHS trust breach compromised thousands of patient records, disclosed over 6 months after notification
23 Sep 2026
High22 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
Ransomware attack affecting patients and families in 2024
22 Sep 2026
High22 Sep 2026
Covenant Health
Healthcare · 480,000 records
Data breach impacts nearly 480,000 people
22 Sep 2026
Critical22 Sep 2026
CHC
Healthcare · 1,000,000 records
US healthcare provider breach impacts 1 million patients
22 Sep 2026
High22 Sep 2026
Novocure
Healthcare · Records not stated
Data breach affects more than 1,400 cancer patients
22 Sep 2026
Critical22 Sep 2026
Welltok
Healthcare · 14,760,000 records
MOVEit Transfer breach exposed 14.76 million individuals' healthcare data at Denver-based patient health company
22 Sep 2026
Critical22 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
22 Sep 2026
Critical22 Sep 2026
MCBS
Healthcare · 1,200,000 records
Data breach at Atlanta-based medical business management company affected 1.2 million individuals
22 Sep 2026
Critical22 Sep 2026
Medical Billing Company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people to dark web
22 Sep 2026
High22 Sep 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at multiple hospital facilities
22 Sep 2026
High22 Sep 2026
Veradigm
Healthcare · Records not stated
Third party data breach; hackers threatened to publish exposed data
22 Sep 2026
High21 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
Ransomware attack affecting patients and families
21 Sep 2026
Critical21 Sep 2026
Covenant Health
Healthcare · 480,000 records
Data breach impacting nearly 480,000 people
21 Sep 2026
Critical21 Sep 2026
CHC
Healthcare · 1,000,000 records
US healthcare provider breach impacting 1 million patients
21 Sep 2026
High21 Sep 2026
Novocure
Healthcare · Records not stated
Data breach affecting more than 1,400 cancer patients
21 Sep 2026
Critical21 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
21 Sep 2026
High21 Sep 2026
Essex NHS Trust
Healthcare · 900,000 records
NHS trust breach: thousands of patient records stolen in cyber attack, disclosed 6+ months after notification
21 Sep 2026
Critical21 Sep 2026
Veradigm
Healthcare · Records not stated
Electronic health records company: hackers infiltrated vendor systems and stole customer health data
21 Sep 2026
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