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
0
Added in November
22
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.
5,604 results · Healthcare disclosures. Clear filters
Critical1 Jun 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
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen during major ransomware attack disrupting healthcare services
1 Jun 2026
High1 Jun 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
1 Jun 2026
Critical1 Jun 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 affecting healthcare systems
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Ransomware attack stole thousands of NHS patient records in Essex healthcare trust
1 Jun 2026
Critical1 Jun 2026
Essex NHS
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, breach disclosed 6+ months after notification
1 Jun 2026
High1 Jun 2026
Synnovis/Mid South Essex NHS
Healthcare · 900,000 records
Thousands of NHS patient records confirmed stolen in ransomware cyberattack
1 Jun 2026
High1 Jun 2026
Valley Kidney Specialists
Healthcare · Records not stated
Data breach exposed personal and health information from medical records
1 Jun 2026
Critical1 Jun 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
1 Jun 2026
Critical1 Jun 2026
Partnered Health (Australian clinics)
Healthcare · Records not stated
Medical records breached including Medicare numbers, treatment details, and pathology results exposed on dark web.
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen during major ransomware attack affecting healthcare services
1 Jun 2026
High1 Jun 2026
Synnovis
Healthcare · 900,000 records
Thousands of NHS patient records stolen during major ransomware attack affecting Mid South Essex Foundation Trust
1 Jun 2026
Critical1 Jun 2026
Amgen
Healthcare · Records not stated
Patient health data and IP stolen in cybersecurity breach; cloud environment compromised
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Personal health information of patients compromised through third-party data breach
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen during major ransomware attack disrupting healthcare services
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack; disclosure more than six months after notification
1 Jun 2026
High1 Jun 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 cyberattack
1 Jun 2026
Critical1 Jun 2026
Medical billing company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposed 1.3M people's protected health data leaked to dark web in 2025
1 Jun 2026
Critical1 Jun 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patients; healthcare billing and practice-management data breached
1 Jun 2026
Critical1 Jun 2026
Medical Billing Company
Healthcare · 1,300,000 records
2025 ransomware attack leaked protected health data on 1.3 million people to dark web
1 Jun 2026
High1 Jun 2026
Partnered Health
Healthcare · Records not stated
Patient records, personal information and medical notes stolen in cyber-attack on 21 clinics
1 Jun 2026
High1 Jun 2026
Huntsville Hospital
Healthcare · Records not stated
Personal health information of patients compromised in data breach
1 Jun 2026
Critical1 Jun 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company; 1.26M patients exposed; PEAR ransomware attack
1 Jun 2026
Medium1 May 2026
West Pharmaceutical Services
Healthcare · Records not stated
Ransomware attack forced systems offline globally, disrupting operations.
1 May 2026
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