Disclosure tracker › Healthcare disclosures
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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.
5,367
Disclosures in the tracker, all years
2,083
Of those, indexed in 2026
147
Added in October
22
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 31 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
5,552 results · Healthcare disclosures. Clear filters
Critical1 Jul 2026
Medical billing company
Healthcare · 1,260,000 records
Medical billing company exposed 1.26M patient records in PEAR ransomware attack
1 Jul 2026
High1 Jul 2026
Hims & Hers
Healthcare · Records not stated
Patients' medical data allegedly shared with advertisers Meta and Snap without consent
1 Jul 2026
Critical1 Jul 2026
MCBS
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patient records from medical billing company
1 Jul 2026
Critical1 Jul 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patient records from healthcare billing company
1 Jul 2026
High1 Jul 2026
Partnered Health
Healthcare · Records not stated
Personal information and medical details stolen in cyber-attack on 21 clinics
1 Jul 2026
High1 Jul 2026
Clover Health
Healthcare · Records not stated
Health insurer data breach disclosed in securities filing; scope of exposed data unknown
1 Jul 2026
Critical1 Jul 2026
CareCloud
Healthcare · 350,000 records
Healthcare IT company data breach exposed information of over 350,000 people
1 Jul 2026
High3 Jun 2026
DentaQuest
Healthcare · 2,553,599 records
2,553,599 records exposed, Dates of birth, Email addresses, Genders, Government issued IDs and 4 more
3 Jun 2026
Critical1 Jun 2026
iRhythm Technologies
Healthcare · 8,199,999 records
June 2026 breach of wearable cardiac device maker; confirmed to affect 8.2 million individuals.
1 Jun 2026
Critical1 Jun 2026
iRhythm Technologies
Healthcare · 8,199,999 records
Data breach in June 2026 at wearable cardiac device maker affected 8.2 million individuals.
1 Jun 2026
High1 Jun 2026
iRhythm
Healthcare · Records not stated
Wearable cardiac monitoring company (Zio ECG) notifying individuals affected by a June 2026 hacking incident involving personal and health information.
1 Jun 2026
Critical1 Jun 2026
iRhythm
Healthcare · 360,000 records
Medical device maker breach in June exposed data of at least 360,000 people
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in Qilin ransomware cyber attack
1 Jun 2026
High1 Jun 2026
Veradigm
Healthcare · Records not stated
Electronic health record company's vendor systems breached, customer data stolen
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party breach exposed patient information
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of NHS patient records stolen in cyber attack; disclosure delayed over six months after notification.
1 Jun 2026
Critical1 Jun 2026
Veradigm
Healthcare · Records not stated
Electronic health records company; customer data stolen after hackers infiltrated vendor's systems.
1 Jun 2026
Critical1 Jun 2026
Qilin/Essex NHS Trust
Healthcare · 900,000 records
Ransomware attack resulted in stolen patient records; hospitals identifying and warning patients
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information and health records affecting multiple hospital facilities.
1 Jun 2026
High1 Jun 2026
Huntsville Hospital
Healthcare · Records not stated
Patient health information compromised through third-party vendor data breach
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, breach disclosed over six months after notification
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Patient data compromised in third-party breach related to Cerner system
1 Jun 2026
Critical1 Jun 2026
Novo Nordisk
Healthcare · Records not stated
Cyber extortion group claimed breach; over 1TB of data stolen, $25M extortion attempted
1 Jun 2026
Critical1 Jun 2026
Novo Nordisk
Healthcare · Records not stated
Cyber extortion group claimed theft of over 1 terabyte of data with $25 million extortion attempt
1 Jun 2026
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