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.
5,291
Disclosures in the tracker, all years
2,004
Of those, indexed in 2026
49
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 17 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
Critical21 Aug 2026
SickKids data breach
Healthcare · Records not stated
Toronto's Hospital for Sick Children (SickKids) says a cybersecurity incident exposed the personal information of some current and former employees and job applicants, stemming from a flaw in third-party software.…
21 Aug 2026
High20 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Amar Ćemanović reports: Apple American Group LLC, a major Applebee’s franchise operator in the United States, has disclosed a data breach incident. The event has reportedly exposed sensitive personal information…
20 Aug 2026
Critical19 Aug 2026
Organisation not named
Healthcare · 3,700,000 records
The disclosure as indexed does not name the organisation.
Healthcare software firm CareCloud filed documents with the Department of Health and Human Services confirming that 3,756,469 people had information leaked after a hacker spent eight hours in one of the company’s…
19 Aug 2026
Critical19 Aug 2026
UnitedHealthcare
Healthcare · Records not stated
Millions of patients' health and insurance information exposed in 2024 cyberattack
19 Aug 2026
Critical19 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company suffered data breach affecting 1.2 million individuals
19 Aug 2026
Critical19 Aug 2026
Conduent
Healthcare · 62,200,000 records
Healthcare company breach affecting 62.2 million people, third-largest US health hack
19 Aug 2026
Critical19 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company data breach affecting 1.2 million individuals
19 Aug 2026
High17 Aug 2026
Major genetic-testing firm
Healthcare · Records not stated
The June breach, which also exposed employees’ information, underscored the supply-chain risks facing the healthcare sector.
17 Aug 2026
Critical15 Aug 2026
PIH Health
Healthcare · 2,950,000 records
2024 hacking incident affected 2.95M patients; ransomware attack on healthcare provider
15 Aug 2026
Critical15 Aug 2026
Star Health
Healthcare · Records not stated
Indian health insurer suffered data breach; hacker leaked sensitive personal data of customers
15 Aug 2026
Critical15 Aug 2026
UnitedHealthcare
Healthcare · Records not stated
Cyberattack exposed sensitive health and insurance data from millions of patients
15 Aug 2026
High15 Aug 2026
Cerner
Healthcare · Records not stated
2025 breach of healthcare patient data leading to lawsuits from affected hospital systems
15 Aug 2026
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
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