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.
5,398
Disclosures in the tracker, all years
2,113
Of those, indexed in 2026
26
Added in November
33
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 5 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
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
High1 May 2026
Queensland schools (education technology)
Education · Records not stated
Tens of thousands of students and teachers affected in one of most significant global education technology data breaches
1 May 2026
Critical1 May 2026
ANC
Sector not stated · Records not stated
2 million private member records of African National Congress exposed by hacker group
1 May 2026
High1 May 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Medical records including Medicare numbers and pathology results exposed on dark web
1 May 2026
High1 May 2026
Exact Sciences / Abbott
Healthcare · Records not stated
Patient personal information exposed through at-home diagnostic tests
1 May 2026
High1 May 2026
CISA (Internal)
Government · Records not stated
Exposed GitHub repository included internal credentials and files
1 May 2026
High1 May 2026
The Oncology Institute
Healthcare · Records not stated
Patient data potentially exposed through third-party vendor breach detected by Kroll administrator
1 May 2026
High1 May 2026
Tens of thousands of Queensland students and teachers
Education · Records not stated
Tens of thousands of Queensland students and teachers impacted in major global education technology data breach
1 May 2026
High1 May 2026
Australian Medical Clinics (Partnered)
Healthcare · Records not stated
Cyberattack exposed Medicare numbers, treatment details, and pathology results
1 May 2026
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