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.
5,475
Disclosures in the tracker, all years
2,009
Of those, indexed in 2026
58
Added in October
14
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 19 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
5,016 results · Healthcare disclosures. Clear filters
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party potential privacy breach affecting members' data
1 Feb 2026
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party privacy breach notification to members; unauthorized access to member data
1 Feb 2026
Critical1 Feb 2026
AnMed
Healthcare · Records not stated
Ransomware cyberattack affecting multiple facilities, forced to operate in limited capacity
1 Feb 2026
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party potential privacy breach exposing member data
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting patient records; clinics offline for over a week
1 Feb 2026
High1 Feb 2026
Munson Healthcare
Healthcare · 120,000 records
120K patients' data compromised in data breach
1 Feb 2026
High1 Feb 2026
Conduent (Anthem)
Healthcare · Records not stated
Data breach impacting some Anthem health insurance members
1 Feb 2026
High1 Feb 2026
NYC Health + Hospital
Healthcare · Records not stated
Unauthorized access to systems between late November and mid-February
1 Feb 2026
High1 Feb 2026
Anthem (Conduent)
Healthcare · Records not stated
Breach contained with no evidence of misuse; personal data exposed to some members
1 Feb 2026
High1 Feb 2026
Anthem (Conduent)
Healthcare · Records not stated
Data breach impacts some Anthem members; Conduent reports breach is contained with no evidence of misuse
1 Feb 2026
High1 Feb 2026
Anthem (Conduent)
Healthcare · Records not stated
Data breach impacts some Anthem members; Conduent confirms breach is contained with no evidence of misuse
1 Feb 2026
Medium1 Feb 2026
Conduent/Anthem
Healthcare · Records not stated
Data breach impacted some Anthem members; Conduent reports breach contained with no evidence of misuse
1 Feb 2026
High1 Feb 2026
Anthem (Conduent)
Healthcare · Records not stated
Data breach impacting Anthem members; contained with no evidence of misuse or public release
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted access to patient records and clinical operations
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting patient records, clinics offline for over a week
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted patient record access and clinic operations for over a week
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack caused clinic closures and disrupted patient records access for over a week
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted patient record access and clinics operations
1 Feb 2026
High1 Feb 2026
Munson Healthcare
Healthcare · 120,000 records
120,000 patients' data compromised in data breach involving one of their service providers
1 Feb 2026
Critical1 Feb 2026
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affecting 3.2M victims
1 Feb 2026
High1 Feb 2026
Conduent (Anthem)
Healthcare · Records not stated
Data breach impacted some Anthem health insurance members; contained with no evidence of misuse
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted patient records access and clinic operations
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted patient records access and clinic operations for over a week
1 Feb 2026
High1 Feb 2026
Ransomware attack and data
Healthcare · Records not stated
Ransomware attack and data leak exposed Multiethnic Cohort Study data including driver's license numbers and voter registration
1 Feb 2026
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