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.
5,299
Disclosures in the tracker, all years
2,012
Of those, indexed in 2026
58
Added in October
15
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.
4,964 results · Healthcare disclosures. Clear filters
High1 Jun 2026
Synnovis NHS Trust
Healthcare · 900,000 records
Ransomware attack stole thousands of NHS patient records from Essex healthcare trust
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 confirmed stolen during ransomware attack disrupting healthcare services
1 Jun 2026
Critical1 Jun 2026
Thousands of patient records stolen in ransomware cyberattack
Healthcare · Records not stated
Thousands of patient records stolen in ransomware cyberattack
1 Jun 2026
Critical1 Jun 2026
Synnovis (NHS)
Healthcare · 900,000 records
Thousands of NHS patient records stolen in major ransomware attack affecting healthcare services
1 Jun 2026
Critical1 Jun 2026
Thousands of NHS patient records
Healthcare · 900,000 records
Thousands of NHS patient records confirmed stolen in 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 confirmed stolen during major ransomware attack disrupting healthcare
1 Jun 2026
Critical1 Jun 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of NHS patient records stolen in ransomware cyberattack
1 Jun 2026
Critical1 Jun 2026
Synnovis/Essex NHS
Healthcare · 900,000 records
Thousands of patient records stolen in major ransomware cyberattack on NHS trust in Essex, England
1 Jun 2026
Critical1 Jun 2026
Thousands of patient records
Healthcare · Records not stated
Thousands of patient records confirmed stolen in ransomware attack that disrupted healthcare services
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 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
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