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.
5,280
Disclosures in the tracker, all years
1,993
Of those, indexed in 2026
39
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 15 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,947 results · Disclosures in 2026. Clear filters
Critical1 May 2026
NYC Health + Hospitals
Healthcare · Records not stated
Biometrics, diagnoses, and bank details exposed via third-party vendor breach lasting months
1 May 2026
High1 May 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at Huntsville Hospital facilities
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
Largest US healthcare data breach of 2026; 15 million patients affected with SSNs and health data exposed
1 May 2026
Critical1 May 2026
Canvas (Instructure)
Education · 275,000,000 records
ShinyHunters breach exposed approximately 275 million records from educational platform
1 May 2026
High1 May 2026
Instructure (Canvas)
Education · Records not stated
Ransomware breach with reported payment to threat actors after dark web data leak
1 May 2026
High1 May 2026
7-Eleven
Retail · Records not stated
System breach exposing documents related to franchises confirmed after ShinyHunters claims
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Data extortion attack affecting education technology platform; disrupted schools and colleges nationwide
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · Records not stated
Dental benefits administrator breach affecting 15 million with SSNs and health data exposed
1 May 2026
Critical1 May 2026
Canvas
Education · 275,000,000 records
Educational platform breach by ShinyHunters threatening to leak 275 million records
1 May 2026
High1 May 2026
7-Eleven
Retail · Records not stated
System storing franchise documents breached by ShinyHunters, data exposure confirmed
1 May 2026
Critical1 May 2026
Instructure (Canvas)
Education · Records not stated
Massive data breach affecting Canvas learning management system; millions of students' personal data stolen nationwide
1 May 2026
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
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