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.
5,582
Disclosures in the tracker, all years
2,082
Of those, indexed in 2026
146
Added in October
21
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 31 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
Critical13 Aug 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen in ransomware attack affecting NHS trust
13 Aug 2026
Critical13 Aug 2026
Poland National Patient Records
Healthcare · Records not stated
19M medical records stolen in cyberattack
13 Aug 2026
High13 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
2025 Cerner breach resulted in stolen patient data; hospital faces class action lawsuit for negligence
13 Aug 2026
Critical13 Aug 2026
MyDr Poland Medical Records
Healthcare · 19,000,000 records
19M patient records stolen from 12K clinics
13 Aug 2026
High13 Aug 2026
WellPoint Texas
Healthcare · Records not stated
Data breach exposed personal information from WellPoint Texas health insurance operations
13 Aug 2026
High13 Aug 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen during major ransomware attack
13 Aug 2026
High13 Aug 2026
Munson Healthcare
Healthcare · 120,000 records
120,000 patients informed of data compromise in breach
13 Aug 2026
High13 Aug 2026
Craneware Healthcare Finance
Healthcare · Records not stated
Unauthorized access to subset of data environment
13 Aug 2026
Critical13 Aug 2026
Change Healthcare
Healthcare · 100,000,000 records
2024 cyberattack exposed data affecting multiple healthcare providers including IU Health
13 Aug 2026
Critical13 Aug 2026
Polish Medical Records Platform
Healthcare · 19,000,000 records
19M patient records stolen in cyberattack
13 Aug 2026
Critical13 Aug 2026
DentaQuest Benefits
Healthcare · Records not stated
15M health records stolen in spring breach
13 Aug 2026
Critical13 Aug 2026
MyDr Poland
Healthcare · 19,000,000 records
19M patient records stolen from medical platform
13 Aug 2026
High13 Aug 2026
CareCloud
Healthcare · 345,000 records
Cyberattack exposed data of 345,000 patients from EHR and RCM provider
13 Aug 2026
Critical13 Aug 2026
Marianne Kolbasuk McGee
Healthcare · Records not stated
Marianne Kolbasuk McGee reports: A Canadian hospital is dealing with a ransomware attack on its facility management systems that has affected the building’s doors and heating, ventilation and air conditioning…
13 Aug 2026
Critical13 Aug 2026
One Medical
Healthcare · Records not stated
8.8TB stolen from legacy systems by ShinyHunters
13 Aug 2026
Critical12 Aug 2026
Navia Benefit Solutions
Healthcare · Records not stated
2.7M SSNs and health plan data stolen
12 Aug 2026
Critical12 Aug 2026
MCBS Medical
Healthcare · 1,260,000 records
Medical billing company breach exposed 1.26 million patients in PEAR ransomware attack
12 Aug 2026
Critical12 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company suffered breach affecting 1.2 million individuals' data
12 Aug 2026
Critical12 Aug 2026
12 Aug 2026
Critical12 Aug 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company; 1.26 million patients exposed in PEAR ransomware attack
12 Aug 2026
Critical12 Aug 2026
NYC Health and Hospitals
Healthcare · 1,800,000 records
1.8M patient records and biometric data stolen
12 Aug 2026
High12 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen during major ransomware attack disrupting healthcare
12 Aug 2026
Critical12 Aug 2026
Indiana University Health
Healthcare · Records not stated
Patient data exfiltrated by Storm threat actor
12 Aug 2026
High12 Aug 2026
Munson Healthcare
Healthcare · 120,000 records
Data breach exposed 120,000 patients' information
12 Aug 2026
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