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.
5,394
Disclosures in the tracker, all years
2,108
Of those, indexed in 2026
25
Added in November
32
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.
Worldwide · How they got in
Incidents worldwide, by country.
77 incidents from 10 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.
- Denmark27 Oct 2026ENGIEThe source does not say how they got in.BleepingComputer
High1 May 2026
Canvas (education platform)
Education · Records not stated
Data extortion attack targeting education technology platform disrupted schools and colleges nationwide
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients affected; largest healthcare data breach of 2026 at dental benefits administrator
1 May 2026
High1 May 2026
Canvas (Instructure)
Education · Records not stated
Ransomware attack affected Canvas learning management system at universities nationwide during finals week
1 May 2026
High1 May 2026
Queensland schools
Education · Records not stated
Tens of thousands of Queensland students and teachers affected in major education technology data breach
1 May 2026
High1 May 2026
UC Berkeley
Education · 600,000 records
ShinyHunters cybercrime group claimed 600K records stolen from Canvas learning management platform
1 May 2026
High1 May 2026
Atrium Health Navicent
Healthcare · Records not stated
Patient records system experienced data breach, potentially exposing patients' personal information and medical records
1 May 2026
Critical1 May 2026
Foxconn
Technology · Records not stated
Cyberattack on North American facilities with claims of stolen Apple and Nvidia data (8TB claimed)
1 May 2026
Critical1 May 2026
Canvas
Education · 275,000,000 records
Educational platform breach claims 275 million records; ShinyHunters gang reached deal to delete stolen data
1 May 2026
Critical1 May 2026
African National Congress (ANC)
Sector not stated · Records not stated
2 million private member records exposed and sold by hacker group
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 Canvas login system across thousands of universities
1 May 2026
Critical1 May 2026
Canvas
Education · 275,000,000 records
ShinyHunters hacking group claimed theft of data from educational platform affecting 275 million users
1 May 2026
Critical1 May 2026
African National Congress (ANC)
Sector not stated · Records not stated
Data breach exposed 2 million private member records sold by hacker group
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 Canvas login systems at thousands of universities
1 May 2026
High1 May 2026
Roanoke (City/Organization)
Government · Records not stated
Phishing email breach exposed Social Security numbers and passport numbers
1 May 2026
Critical1 May 2026
Canvas (Instructure)
Education · 275,000,000 records
Data breach involving 275M records from educational platform, hackers agreed to delete stolen data
1 May 2026
Critical1 May 2026
ANC (African National Congress)
Government · Records not stated
Data breach exposed 2 million private member records sold by hacker group
1 May 2026
Critical1 May 2026
Conduent
Healthcare · 62,200,000 records
62.2 million records exposed, third-largest US healthcare breach ever
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patient records stolen in largest healthcare data breach of 2026 (May incident)
1 May 2026
Critical1 May 2026
Instructure (Canvas)
Education · Records not stated
Ransomware attack on Canvas learning management system affecting thousands of schools nationwide
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Massive data breach affecting schools nationwide from ransomware attack and extortion
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients impacted in largest healthcare breach of 2026, second-largest dental benefits administrator in U.S.
1 May 2026
Medium1 May 2026
7-Eleven
Retail · Records not stated
Unauthorized third party gained access to systems storing franchisee documents in confirmed data breach
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Massive data breach affecting schools nationwide; extortion attack on education platform
1 May 2026
Critical1 May 2026
Instructure (Canvas platform)
Education · Records not stated
Supply chain breach driving 58% of all breach notices in 2026
1 May 2026
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