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.
5,372
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 Jan 2025
Conduent
Healthcare · 62,200,000 records
62.2 million records exposed in third-largest US healthcare hack ever; 58% increase in breach notices 2026
1 Jan 2025
High1 Jan 2025
Quantum Health
Healthcare · Records not stated
Healthcare advocacy vendor breach exposed employees' social security numbers via vendor data compromise
1 Jan 2025
Critical1 Jan 2025
Exact Sciences/Abbott
Healthcare · Records not stated
Patient data from at-home diagnostic tests exposed; sensitive personal information compromised
1 Jan 2025
Critical1 Jan 2025
Centers Laboratory
Healthcare · 540,000 records
540,000 patient records exposed in cyberattack by Worldleaks group
1 Jan 2025
Critical1 Jan 2025
Cerner
Healthcare · Records not stated
Hackers accessed electronic health records stored on legacy network in January breach
1 Jan 2025
Critical1 Jan 2025
Network breach
Healthcare · 1,260,000 records
Network breach exposed sensitive healthcare billing data affecting 1.26 million people
1 Jan 2025
Critical28 Dec 2024
PowerSchool (student health records)
Healthcare · Records not stated
62M student and staff records including health data exposed
28 Dec 2024
High1 Dec 2024
Abbott Laboratories
Healthcare · Records not stated
Cyber incident affecting medical device company; investigating data breach affecting patient information
1 Dec 2024
Critical1 Dec 2024
Trizetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized access to IT environment exposed PHI of 3.4 million individuals
1 Dec 2024
Critical1 Dec 2024
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposing sensitive health and insurance data from millions of patients
1 Dec 2024
Critical1 Dec 2024
McLaren Health Care
Healthcare · 3,200,000 records
Two ransomware attacks in 2023 and 2024 affecting 3.2 million patients, settled class-action for $14M
1 Dec 2024
High1 Dec 2024
South Florida Injury Centers
Healthcare · 1,525 records
Data breach exposed 1,525 records including SSNs and medical records (PHI/PII)
1 Dec 2024
High28 Nov 2024
Alder Hey Children's Hospital
Healthcare · Records not stated
INC Ransom gang stole patient records from Liverpool children's hospital
28 Nov 2024
High25 Nov 2024
Wirral University Teaching Hospital
Healthcare · Records not stated
Cyberattack forced hospital to declare major incident, systems offline for days
25 Nov 2024
High1 Nov 2024
Ransomware attack
Healthcare · Records not stated
Ransomware attack exposed personal data of individuals affected
1 Nov 2024
High1 Nov 2024
Unauthorized email access
Healthcare · Records not stated
Unauthorized email access exposed SSNs and medical records for 15 months (Aug 2024-Nov 2024)
1 Nov 2024
Critical1 Nov 2024
Unauthorized email access for 15 months
Healthcare · Records not stated
Unauthorized email access for 15 months exposed SSNs and medical records (Aug 2024-Nov 2024)
1 Nov 2024
High1 Nov 2024
November 2024 ransomware attack
Healthcare · Records not stated
November 2024 ransomware attack exposed data; notification letters sent in July 2026
1 Nov 2024
Critical1 Nov 2024
Unauthorized email access from Aug 2024-Nov 2024
Healthcare · Records not stated
Unauthorized email access from Aug 2024-Nov 2024 exposed SSNs and medical records for 15 months
1 Nov 2024
Critical1 Nov 2024
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023 and 2024 affected 3.2 million victims, settled class-action lawsuit for $14M
1 Nov 2024
Medium14 Oct 2024
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware disrupted hospital IT, appointment systems and patient portals down
14 Oct 2024
Medium14 Oct 2024
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware disrupted hospital IT, appointment systems and patient portals down
14 Oct 2024
Medium14 Oct 2024
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware disrupted hospital IT, appointment systems and patient portals down
14 Oct 2024
Medium14 Oct 2024
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware disrupted hospital IT, appointment systems and patient portals down
14 Oct 2024
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