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.
5,339
Disclosures in the tracker, all years
2,052
Of those, indexed in 2026
111
Added in October
18
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 25 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.
74 incidents from 11 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.
- France20 Oct 2026US tax preparation businessesThe source does not say how they got in.The Record
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients affected; largest 2026 US health breach exposed SSNs and dental/vision health info
1 May 2026
Critical1 May 2026
Instructure Canvas
Education · Records not stated
ShinyHunters breach affected 275 million educational platform users; supply chain incident
1 May 2026
High1 May 2026
Canvas (Instructure)
Education · Records not stated
Data breach after ransomware attack; appears payment was made to threat actors
1 May 2026
Critical1 May 2026
ANC (African National Congress)
Sector not stated · Records not stated
2 million private member records exposed by hacker group for sale
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Massive data breach affecting schools and universities nationwide; extortion attack
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
Network breach exposed SSNs and dental/vision health records of 15 million people
1 May 2026
High1 May 2026
Idaho State University
Education · Records not stated
Ransomware attack disrupted finals week and affected thousands of other schools
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Massive data breach affecting schools nationwide; data extortion attack
1 May 2026
High1 May 2026
7-Eleven
Retail · Records not stated
Data breach compromised current, former, and prospective franchisees' detailed application packages in Canada and US
1 May 2026
High1 May 2026
UC Berkeley
Education · 600,000 records
ShinyHunters stole 600K records from Canvas learning management platform (bCourses)
1 May 2026
High1 May 2026
Atrium Health Navicent
Healthcare · Records not stated
Patient records system data breach exposing patient records and personal information
1 May 2026
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
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