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.
5,292
Disclosures in the tracker, all years
2,005
Of those, indexed in 2026
50
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
4,963 results · Healthcare disclosures. Clear filters
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
Critical31 Jul 2026
McLaren Health Care
Healthcare · Records not stated
Ransomware attacks in 2023 and 2024 exposed data on 3.2 million victims
31 Jul 2026
High31 Jul 2026
CommonSpirit Health
Healthcare · 19,027 records
19,027 patient records exposing personal and medical information
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 ransomware attack
31 Jul 2026
Critical31 Jul 2026
TriZetto
Healthcare · 3,000,000 records
More than 3 million people impacted by breach of healthcare tech provider software affecting multiple counties
31 Jul 2026
Critical31 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 ransomware attack affecting healthcare services
31 Jul 2026
High31 Jul 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of patient records stolen during ransomware attack on Mid South Essex Foundation Trust
31 Jul 2026
High31 Jul 2026
Essex NHS
Healthcare · 900,000 records
Patient records stolen in cyber attack, disclosed over 6 months after notification
31 Jul 2026
High31 Jul 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at multiple facilities
31 Jul 2026
Critical31 Jul 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patient records from medical billing company
31 Jul 2026
High31 Jul 2026
Synnovis NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in major ransomware attack affecting Mid South Essex NHS
31 Jul 2026
Critical31 Jul 2026
MCBS
Healthcare · 1,200,000 records
Data breach affects 1.2 million individuals at Atlanta-based medical business management company
31 Jul 2026
Critical31 Jul 2026
Network breach
Healthcare · 1,260,000 records
Network breach exposed sensitive data affecting 1.26 million people at healthcare billing company
31 Jul 2026
Critical31 Jul 2026
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affected 3.2+ million patients, $14M settlement
31 Jul 2026
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