Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker
Disclosures in 2026
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
14
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 19 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,981 results · Disclosures in 2026. Clear filters
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
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
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
High1 May 2026
Queensland Education Technology Provider
Education · Records not stated
Major cyber breach exposing tens of thousands of Queensland students and teachers data
1 May 2026
Critical1 May 2026
Partnered Health (Australian clinics)
Healthcare · Records not stated
Data breach exposed Medicare numbers, treatment details, and pathology results; records could be sold on dark web
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 student and teacher records 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 one of the most significant global education technology data breaches.
1 May 2026
High1 May 2026
Queensland education technology
Education · Records not stated
Tens of thousands of students and teachers affected in major breach of Australian schools
1 May 2026
High1 May 2026
Queensland Education Technology (Schools)
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
Healthcare · 13,000 records
The disclosure as indexed does not name the organisation.
Hospital patient records for ~13,000 patients exposed via cyberattack on law firm
1 May 2026
High1 May 2026
Australian Schools
Education · Records not stated
Significant education technology breach exposed tens of thousands of Queensland students and teachers
1 May 2026
High1 May 2026
Department for Education (DfE)
Government · 607,000 records
Cyberattack exposed approximately 607,000 records containing sensitive government education data.
1 May 2026
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