Intelligence · Disclosure tracker
Every public disclosure, dated and sourced.
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.
5,323
Disclosures in the tracker, all years
2,037
Of those, indexed in 2026
87
Added in October
21
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 22 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
Worldwide · How they got in
Incidents worldwide, by country.
72 incidents from 9 countries in the last 90 days, each from a public source and reviewed before it is shown. Where the source says how the attackers got in, the row says so.
- United Kingdom16 Oct 2026Southville Primary School (Bristol City Council area)The source does not say how they got in.Hits Radio (West of England)
Critical1 May 2026
NYC Health + Hospitals
Healthcare · 1,800,000 records
Hackers stole medical data, fingerprints and biometrics from at least 1.8 million people
1 May 2026
Critical1 May 2026
Foxconn
Technology · Records not stated
Cyberattack on North American facilities with claims of stolen Apple and Nvidia data
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients impacted in largest healthcare breach of 2026; cyberattack occurred in May
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting thousands of schools, disrupting finals week and operations
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients affected; Social Security numbers and dental/vision health information exposed in May breach
1 May 2026
High1 May 2026
Foxconn
Technology · Records not stated
Ransomware cyberattack affecting Apple iPhone manufacturing operations
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Learning management platform breach affected schools nationwide; data extortion attack disrupted classes
1 May 2026
High1 May 2026
Metabase
Technology · Records not stated
ShinyHunters claimed hack days after zero-day disclosure exposed connected databases
1 May 2026
Critical1 May 2026
Data breach
Healthcare · Records not stated
Data breach exposed SSNs and medical records
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted finals week across thousands of educational institutions
1 May 2026
High1 May 2026
Queensland Education (Schools)
Education · Records not stated
Tens of thousands of Queensland students and teachers' data exposed in education technology breach
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted finals week at thousands of schools including ISU
1 May 2026
Critical1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Tens of thousands of students and teachers caught in major cyber breach of education technology system
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted finals week across thousands of schools including ISU
1 May 2026
High1 May 2026
Queensland Schools (EdTech)
Education · Records not stated
Tens of thousands of students and teachers affected in major education technology breach
1 May 2026
High1 May 2026
Queensland Schools/Education Technology Provider
Education · Records not stated
Tens of thousands of Queensland students and teachers data compromised in major education technology breach
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Tens of thousands of Queensland students and teachers affected in significant education technology breach
1 May 2026
High1 May 2026
Partnered Health (Australian)
Healthcare · Records not stated
Personal information and medical details of patients at 21 clinics breached
1 May 2026
High1 May 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Patient personal health information compromised in third-party vendor breach
1 May 2026
High1 May 2026
Queensland schools education technology
Education · Records not stated
Tens of thousands of Queensland students and teachers affected in major education technology breach
1 May 2026
Critical1 May 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 May 2026
High1 May 2026
Mediaworks
Sector not stated · Records not stated
Ransomware group breach exposed significant amount of data from Hungarian media firm
1 May 2026
Medium1 May 2026
Evanston Township High School
Education · Records not stated
Cyberattack disrupted phone systems for over a week
1 May 2026
High1 May 2026
Queensland schools (Australian edtech)
Education · Records not stated
Major cyber breach affecting tens of thousands of students and teachers in one of most significant global education tech breaches
1 May 2026
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