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.
5,370
Disclosures in the tracker, all years
2,084
Of those, indexed in 2026
147
Added in October
22
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
Critical1 Aug 2026
1 Aug 2026
High1 Aug 2026
Synnovis NHS Trust
Healthcare · 900,000 records
Ransomware attack stole thousands of patient records from Essex NHS trust
1 Aug 2026
High1 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach affected approximately 170,000 individuals in South Carolina
1 Aug 2026
Critical1 Aug 2026
Organisation not named
Healthcare · 1,200,000 records
The disclosure as indexed does not name the organisation.
2025 ransomware attack exposed personal data of 1.2 million individuals
1 Aug 2026
High1 Aug 2026
Law firm (New Jersey)
Healthcare · Records not stated
13K hospital patient records exposed in cyberattack
1 Aug 2026
High1 Aug 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, disclosed 6+ months after notification
1 Aug 2026
Critical1 Aug 2026
Abbott Exact Sciences
Healthcare · 30,000,000 records
30M patient records stolen via vishing attack
1 Aug 2026
High1 Aug 2026
Unlimited Technology Systems
Healthcare · 442,000 records
442K patient records exposed in ransomware attack
1 Aug 2026
Critical1 Aug 2026
1 Aug 2026
Critical1 Aug 2026
Cardiovascular Institute New England
Healthcare · Records not stated
Full medical and financial records confirmed exposed
1 Aug 2026
Critical1 Aug 2026
Craneware Healthcare Billing
Healthcare · Records not stated
Patient and customer data stolen from 12K US facilities
1 Aug 2026
High1 Aug 2026
Cardiovascular Institute NE
Healthcare · Records not stated
SSNs and patient medical records leaked
1 Aug 2026
High1 Aug 2026
1 Aug 2026
High1 Aug 2026
Abbott Laboratories
Healthcare · Records not stated
Customer data stolen via voice phishing campaign
1 Aug 2026
Critical1 Aug 2026
1 Aug 2026
High31 Jul 2026
Yearslong data breach
Healthcare · Records not stated
Yearslong data breach exposed residents' private health-related information
31 Jul 2026
Critical31 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company data breach exposed sensitive information affecting 1.26 million people
31 Jul 2026
Critical31 Jul 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
31 Jul 2026
Critical31 Jul 2026
Unnamed Medical Billing Company
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people to dark web
31 Jul 2026
High31 Jul 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen in major ransomware attack disrupting healthcare services
31 Jul 2026
High31 Jul 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of patient records stolen in major ransomware cyberattack affecting NHS trust in Essex
31 Jul 2026
Critical31 Jul 2026
Medical billing company
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people; data leaked to dark web
31 Jul 2026
Critical31 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company network breach exposed sensitive data affecting 1.26 million people
31 Jul 2026
High31 Jul 2026
Synnovis/NHS Essex
Healthcare · 900,000 records
Thousands of patient records stolen in ransomware attack affecting NHS trust in Essex
31 Jul 2026
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