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.
5,367
Disclosures in the tracker, all years
2,083
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
High1 Jun 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of patient records stolen in ransomware cyberattack affecting Essex NHS trust
1 Jun 2026
High1 Jun 2026
Breach
Healthcare · Records not stated
Breach exposed SSNs and medical records
1 Jun 2026
Critical1 Jun 2026
Personal and medical records including SSNs
Healthcare · Records not stated
Personal and medical records including SSNs exposed
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 held by Essex healthcare trust
1 Jun 2026
High1 Jun 2026
Thousands of patient records stolen in ransomware attack
Healthcare · Records not stated
Thousands of patient records stolen in ransomware attack
1 Jun 2026
Critical1 Jun 2026
SSNs and medical records
Healthcare · Records not stated
SSNs and medical records exposed
1 Jun 2026
Critical1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen in ransomware attack affecting NHS healthcare systems
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 in ransomware attack
1 Jun 2026
Critical1 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
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack stole thousands of patient records in major healthcare cyberattack
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 affecting Essex healthcare
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Ransomware attack stolen thousands of NHS patient records from Essex NHS trust
1 Jun 2026
Critical1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen in ransomware cyberattack on NHS 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 stolen during major ransomware attack affecting 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.
Ransomware attack stole thousands of NHS patient records from Essex NHS trust
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 affecting multiple clinics
1 Jun 2026
High1 Jun 2026
Essex NHS Trust/Synnovis
Healthcare · 900,000 records
Thousands of NHS patient records stolen in ransomware cyberattack on Mid South Essex Foundation 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 patient records stolen during major ransomware attack affecting NHS trust
1 Jun 2026
Critical1 Jun 2026
Ransomware attack
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data of 1.3 million people to dark web
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 during major ransomware attack
1 Jun 2026
High1 Jun 2026
Synnovis (NHS Essex)
Healthcare · 900,000 records
Thousands of NHS patient records stolen in ransomware cyberattack
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 ransomware attack
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen in ransomware attack affecting NHS 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 stolen in ransomware cyberattack on Essex healthcare provider
1 Jun 2026
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