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.
5,292
Disclosures in the tracker, all years
2,005
Of those, indexed in 2026
50
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
4,963 results · Healthcare disclosures. Clear filters
Critical31 Jul 2026
MCBS
Healthcare · 1,260,000 records
Medical billing firm breach exposed sensitive healthcare data for 1.26 million people
31 Jul 2026
High31 Jul 2026
Partnered Health
Healthcare · Records not stated
Australian healthcare provider breach exposed personal information and medical details across 21 clinics
31 Jul 2026
High31 Jul 2026
Synnovis
Healthcare · 900,000 records
Thousands of NHS patient records stolen during ransomware attack affecting Mid South Essex Foundation Trust
31 Jul 2026
High31 Jul 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, disclosed over 6 months after notification
31 Jul 2026
Critical31 Jul 2026
Medical billing company (unnamed)
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people to dark web
31 Jul 2026
High31 Jul 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at hospital facilities
31 Jul 2026
Critical31 Jul 2026
MCBS
Healthcare · 1,200,000 records
Data breach affecting 1.2 million individuals at Atlanta-based medical business management company
31 Jul 2026
Critical31 Jul 2026
PIH Health
Healthcare · 2,950,000 records
2024 ransomware hacking incident exposed 2.95 million patient records
31 Jul 2026
High31 Jul 2026
CommonSpirit Health
Healthcare · 19,027 records
19,027 patient records exposed with personal and medical information
31 Jul 2026
High31 Jul 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in ransomware cyberattack by Synnovis
31 Jul 2026
Critical31 Jul 2026
TriZetto
Healthcare · 3,400,000 records
3.4 million people's health and personal data stolen in 2024 cyberattack
31 Jul 2026
Critical31 Jul 2026
Medical Billing Company (Unnamed)
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data of 1.3 million people leaked to dark web
31 Jul 2026
Critical31 Jul 2026
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed sensitive health and insurance data from millions of patients
31 Jul 2026
Critical31 Jul 2026
Medical Billing Company (unnamed)
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people; leaked to dark web
31 Jul 2026
Critical31 Jul 2026
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affected 3.2 million victims; settled lawsuit for $14M
31 Jul 2026
High31 Jul 2026
South Florida Injury Centers
Healthcare · 1,525 records
Data breach exposed SSNs and medical records of 1,525 individuals
31 Jul 2026
Critical31 Jul 2026
Centers Laboratory
Healthcare · 540,000 records
2025 cyberattack by Worldleaks exposed 540,000 patient records
31 Jul 2026
High31 Jul 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach exposed personal and health records of 46,666 patients
31 Jul 2026
Critical31 Jul 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized access to IT environment exposed PHI of 3.4 million individuals
31 Jul 2026
Critical31 Jul 2026
Medical billing company
Healthcare · 1,260,000 records
Medical billing company hit by PEAR ransomware attack, 1.26 million patient records exposed in healthcare billing data breach
31 Jul 2026
High31 Jul 2026
Amgen
Healthcare · Records not stated
Pharmaceutical company Amgen says it suffered a data breach after threat actors stole corporate data and patient information stored in multiple cloud systems operated by third-party service providers.
31 Jul 2026
High31 Jul 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
In March 2026, hackers stole personal, financial, and medical information from the company’s AWS environment.
The post CareCloud Data Breach Impacts Over 350,000 appeared first on SecurityWeek.
31 Jul 2026
Critical27 Jul 2026
Organisation not named
Healthcare · 23,000,000 records
The disclosure as indexed does not name the organisation.
In May 2026, hackers stole personal and dental health information from DentaQuest’s computer network.
The post DentaQuest Data Breach Potentially Impacts Over 23 Million People appeared first on SecurityWeek.
27 Jul 2026
Critical27 Jul 2026
Organisation not named
Healthcare · 1,200,000 records
The disclosure as indexed does not name the organisation.
The PEAR ransomware group claimed to have stolen 3 TB of information from the medical business management company.
The post MCBS Data Breach Affects 1.2 Million Individuals appeared first on SecurityWeek.
27 Jul 2026
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