Disclosure tracker › Healthcare disclosures
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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.
5,574
Disclosures in the tracker, all years
2,089
Of those, indexed in 2026
8
Added in November
22
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 3 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
5,713 results · Healthcare disclosures. Clear filters
Medium12 Feb 2024
12 Feb 2024
Medium4 Feb 2024
4 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack exposed data from up to 100 million people, disrupted U.S. healthcare systems
1 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack exposed data of up to 100 million people, disrupted U.S. healthcare systems
1 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack exposed data from up to 100M people in healthcare systems
1 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack in Feb 2024 exposed data from up to 100 million people, disrupting U.S. healthcare systems
1 Feb 2024
High1 Feb 2024
Advania
Healthcare · Records not stated
Cyberattack affected at least 60 healthcare customers in Sweden
1 Feb 2024
Critical1 Feb 2024
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed millions of patients' health and insurance information
1 Feb 2024
Critical1 Feb 2024
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affected 3.2M+ victims; settled class-action for $14M
1 Feb 2024
Critical1 Feb 2024
TriZetto
Healthcare · 3,400,000 records
3.4 million people's health and personal data stolen in 2024 cyberattack affecting health insurance tech provider
1 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack in Feb 2024 exposed data from up to 100 million people
1 Feb 2024
Critical1 Feb 2024
Viamedis / Almerys (France)
Healthcare · Records not stated
33M health insurance records stolen from two major French third-party payment providers
1 Feb 2024
Medium1 Feb 2024
Ernest Health
Healthcare · 94,000 records
94K patient records exposed in ransomware across 30 hospitals
1 Feb 2024
High31 Jan 2024
Lurie Children's Hospital
Healthcare · Records not stated
790K pediatric patient records stolen in Rhysida ransomware
31 Jan 2024
High24 Jan 2024
Ambulance Victoria
Healthcare · Records not stated
30,000+ employee records stolen by Agenda ransomware group
24 Jan 2024
Medium20 Jan 2024
20 Jan 2024
High10 Jan 2024
Montefiore Medical Center
Healthcare · 260,000 records
260K patient records stolen by insider threat employee
10 Jan 2024
Medium5 Jan 2024
5 Jan 2024
High1 Jan 2024
Wisconsin nonprofit health plan
Healthcare · Records not stated
Data breach on Jan 25, 2024 resulted in $3.5M settlement
1 Jan 2024
High1 Jan 2024
Wisconsin nonprofit health plan
Healthcare · Records not stated
Data breach affecting member data, settled for $3.5M
1 Jan 2024
Critical1 Jan 2024
TriZetto
Healthcare · Records not stated
Healthcare tech provider breach affecting over 3 million Americans; software vulnerability first disclosed 2024
1 Jan 2024
High1 Jan 2024
Xsolis
Healthcare · Records not stated
Healthcare AI vendor breach in January 2024 exposing patient records from client organizations
1 Jan 2024
High1 Jan 2024
Wisconsin healthcare payer
Healthcare · Records not stated
Data breach on January 25, 2024 exposed member information, settled for $3.5 million
1 Jan 2024
High1 Jan 2024
Wisconsin health plan (nonprofit)
Healthcare · Records not stated
Data breach on January 25, 2024 exposed member information, settled for $3.5 million
1 Jan 2024
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