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
NHS Tayside
Healthcare · 900,000 records
Unauthorized access to medical records of deceased 9-year-old girl after staff improper access
1 Aug 2026
High1 Aug 2026
AnMed
Healthcare · Records not stated
Nonprofit health system cyberattack forced facility closures and prolonged recovery
1 Aug 2026
High1 Aug 2026
Exact Sciences/Abbott
Healthcare · Records not stated
Personal and confidential information from at-home diagnostic test users exposed
1 Aug 2026
Critical1 Aug 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patients' medical billing data
1 Aug 2026
High1 Aug 2026
Exact Sciences / Abbott
Healthcare · Records not stated
Patient sensitive personal information exposed from at-home diagnostic tests
1 Aug 2026
Critical1 Aug 2026
1.26 million patients exposed in PEAR ransomware attack
Healthcare · 1,260,000 records
1.26 million patients exposed in PEAR ransomware attack
1 Aug 2026
Critical1 Aug 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack; healthcare billing company
1 Aug 2026
High1 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Healthcare advocacy vendor breach; employees' social security numbers exposed
1 Aug 2026
Critical1 Aug 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack; medical billing and practice management data compromised
1 Aug 2026
High1 Aug 2026
Quantum Health
Healthcare · Records not stated
Healthcare advocacy vendor breach exposed employees' social security numbers
1 Aug 2026
Critical1 Aug 2026
Amgen
Healthcare · Records not stated
Patient health data and intellectual property stolen from cloud environment
1 Aug 2026
Critical1 Aug 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack on medical billing company
1 Aug 2026
High1 Aug 2026
Aesto Health
Healthcare · Records not stated
Patient information exposed in data breach
1 Aug 2026
Critical1 Aug 2026
Brown Health Medical Group-MA
Healthcare · 311,000 records
311,000 people's personal, medical, and financial information stolen by hackers
1 Aug 2026
Critical1 Aug 2026
Madera Community Hospital
Healthcare · 150,000 records
Extortion group stole personal, financial, and medical information of 150,000 patients
1 Aug 2026
Critical1 Aug 2026
Healthcare billing company breach
Healthcare · 1,260,000 records
Healthcare billing company breach exposed sensitive data affecting 1.26 million people
1 Aug 2026
High1 Aug 2026
Synnovis/Mid South Essex NHS
Healthcare · 900,000 records
Major ransomware attack stole thousands of NHS patient records from Essex healthcare trust
1 Aug 2026
Critical1 Aug 2026
30M patient records stolen including 1M SSNs
Healthcare · 30,000,000 records
30M patient records stolen including 1M SSNs
1 Aug 2026
High1 Aug 2026
Synnovis/Essex NHS
Healthcare · 900,000 records
Ransomware attack stole thousands of patient records held by NHS trust in Essex; disclosed over 6 months after notification
1 Aug 2026
Critical1 Aug 2026
1 Aug 2026
Critical1 Aug 2026
MCBS
Healthcare · 1,200,000 records
Atlanta-based medical business management company data breach affected 1.2 million individuals
1 Aug 2026
High1 Aug 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 Aug 2026
High1 Aug 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack; disclosure delayed over 6 months
1 Aug 2026
High1 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach disclosed affecting approximately 170,000 individuals
1 Aug 2026
Were you affected?