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.
5,574
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
Critical1 Jan 2024
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed sensitive health and insurance information from millions of patients
1 Jan 2024
High1 Jan 2024
Wisconsin Nonprofit Health Plan
Healthcare · Records not stated
Data breach on January 25, 2024 resulted in $3.5M settlement in class-action lawsuit
1 Jan 2024
Critical1 Jan 2024
McLaren Health Care
Healthcare · Records not stated
Two ransomware attacks in 2023 and 2024 affected 3.2 million victims; settled class-action for $14M
1 Jan 2024
High1 Jan 2024
Wisconsin Health Plan (Nonprofit)
Healthcare · Records not stated
Data breach on January 25, 2024 resulted in $3.5M settlement for class-action lawsuit
1 Jan 2024
High1 Jan 2024
Wisconsin nonprofit health plan
Healthcare · Records not stated
Data breach on Jan 25, 2024 resulted in $3.5M settlement over compromised member data
1 Jan 2024
High25 Dec 2023
Anna Jaques Hospital
Healthcare · 316,000 records
316K patient records exposed in Christmas Day ransomware
25 Dec 2023
High19 Dec 2023
St Vincent's Health Australia
Healthcare · Records not stated
Cyberattack on Australia's largest non-profit hospital network, data stolen
19 Dec 2023
High14 Dec 2023
DC Health Link
Healthcare · 48,145 records
48,145 records exposed, Citizenship statuses, Dates of birth, Email addresses, Employers and 7 more
14 Dec 2023
High1 Dec 2023
1 Dec 2023
High30 Nov 2023
30 Nov 2023
Medium29 Nov 2023
Geisinger Wyoming Valley
Healthcare · 72,000 records
72K patient records exposed in insider breach
29 Nov 2023
Critical29 Nov 2023
Geisinger Health
Healthcare · 1,270,000 records
1.27M patient records exposed by former Nuance employee
29 Nov 2023
Critical28 Nov 2023
Integris Health
Healthcare · 2,400,000 records
2.4M patient records stolen and patients extorted directly by hackers
28 Nov 2023
High20 Nov 2023
20 Nov 2023
Critical19 Nov 2023
ALAB Laboratoria (Poland)
Healthcare · 200,000 records
200,000 patient test results published online, Poland's largest lab chain
19 Nov 2023
Critical17 Nov 2023
Concentra Health Services (PJ&A)
Healthcare · 3,900,000 records
3.9M patient records exposed through transcription vendor
17 Nov 2023
Medium14 Nov 2023
14 Nov 2023
Medium6 Nov 2023
Muskoka Algonquin Healthcare
Healthcare · Records not stated
Cybersecurity incident impacted hospital operations in Huntsville and Bracebridge
6 Nov 2023
Medium5 Nov 2023
QIMR Berghofer Medical Research
Healthcare · Records not stated
Research institute data compromised, donor and patient research records at risk
5 Nov 2023
Medium5 Nov 2023
5 Nov 2023
Critical3 Nov 2023
Cook County Health (IL)
Healthcare · 2,600,000 records
2.6M patient records exposed in Perry Johnson breach
3 Nov 2023
Critical3 Nov 2023
Northwell Health (vendor)
Healthcare · 3,890,000 records
3.89M patient records exposed via Perry Johnson breach
3 Nov 2023
Critical3 Nov 2023
Perry Johnson & Associates
Healthcare · 9,000,000 records
9M patient records exposed in transcription service breach
3 Nov 2023
Critical1 Nov 2023
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Mass data breach since November 2023 affecting patients and employees; HIPAA security assessment conducted.
1 Nov 2023
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