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.
5,372
Disclosures in the tracker, all years
2,086
Of those, indexed in 2026
4
Added in November
26
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 1 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
5,607 results · Healthcare disclosures. Clear filters
Critical1 Jun 2025
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patients' data. Medical billing company in Augusta, Georgia
1 Jun 2025
Critical1 Jun 2025
Unnamed medical billing company
Healthcare · 1,300,000 records
Ransomware attack leaked protected health data on 1.3 million people
1 Jun 2025
Critical1 Jun 2025
Unidentified Medical Billing Company
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people to dark web
1 Jun 2025
Critical1 Jun 2025
MCBS Medical Billing
Healthcare · 1,300,000 records
PEAR ransomware attack exposed health data on 1.3 million patients, including protected health information
1 Jun 2025
Critical1 Jun 2025
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack affecting healthcare billing and practice-management
1 Jun 2025
Critical1 Jun 2025
Unnamed Medical Billing Company
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people, leaked to dark web
1 Jun 2025
Critical1 Jun 2025
Medical billing company
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people, leaked to dark web
1 Jun 2025
High1 Jun 2025
Essex NHS Trust
Healthcare · 900,000 records
Patient records stolen in cyber attack, disclosed 6+ months after notification
1 Jun 2025
Critical1 Jun 2025
Medical Billing Company (Unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people to dark web
1 Jun 2025
Critical1 Jun 2025
Medical Billing Company (unnamed)
Healthcare · Records not stated
2025 ransomware attack exposed 1.3 million protected health records leaked to dark web
1 Jun 2025
Critical1 Jun 2025
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
1 Jun 2025
Critical1 Jun 2025
Medical Billing Company
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people, leaked to dark web
1 Jun 2025
Critical1 May 2025
Kettering Health
Healthcare · 1,700,000 records
Ransomware attack affected 1.7 million individuals, Ohio health system
1 May 2025
High10 Feb 2025
10 Feb 2025
High9 Feb 2025
Youthmanual
Healthcare · 937,912 records
937,912 records exposed, Bios, Dates of birth, Email addresses, Genders and 5 more
9 Feb 2025
High27 Jan 2025
Frederick Health
Healthcare · 934,000 records
934K patient records exposed in ransomware attack
27 Jan 2025
Critical2 Jan 2025
Community Health Center Inc
Healthcare · 1,000,000 records
1M patient records exposed in data breach
2 Jan 2025
Critical1 Jan 2025
Cerner
Healthcare · Records not stated
Hackers accessed electronic health records stored on legacy network in January; patients notified months later
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Healthcare · 62,200,000 records
62.2 million records breached, third-largest US healthcare hack ever
1 Jan 2025
High1 Jan 2025
Huntsville Hospital
Healthcare · Records not stated
Patient data compromised through third-party vendor breach, exposing health information
1 Jan 2025
Critical1 Jan 2025
Amgen
Healthcare · Records not stated
Hackers accessed cloud environment stealing patient health information and proprietary intellectual property data
1 Jan 2025
High1 Jan 2025
Abbott/Exact Sciences
Healthcare · Records not stated
Patient sensitive personal information exposed from at-home diagnostic tests
1 Jan 2025
High1 Jan 2025
Partnered Health
Healthcare · Records not stated
Personal information and medical details breached across 21 clinics in Australian healthcare cyberattack
1 Jan 2025
Critical1 Jan 2025
SimonMed Imaging
Healthcare · 1,270,000 records
Healthcare data breach from cyberattack exposing 1.27 million patient records
1 Jan 2025
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