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
Medium12 May 2026
Cushman & Wakefield
Government · 310,431 records
310,431 records exposed, Email addresses, Job titles, Names, Phone numbers and 2 more
12 May 2026
Medium11 May 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
ShinyHunters gets away with emails and other data on 200,000 Zara customers
11 May 2026
Medium11 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
ShinyHunters has escalated its Canvas extortion campaign, defacing hundreds of school login pages and threatening to leak stolen data unless institutions negotiate
11 May 2026
Medium8 May 2026
Zara
Finance · 197,376 records
197,376 records exposed, Email addresses, Geographic locations, Purchases, Support tickets
8 May 2026
Medium7 May 2026
Woflow
Technology · 447,593 records
447,593 records exposed, Email addresses, Names, Phone numbers, Physical addresses
7 May 2026
Critical6 May 2026
Rapid7
Sector not stated · Records not stated
Rapid7 reveals an Iranian false flag operation masquerading as a Chaos ransomware attack
6 May 2026
High6 May 2026
LegionProxy
Technology · 10,144 records
10,144 records exposed, Email addresses, Names, Passwords, Purchases
6 May 2026
Medium5 May 2026
Vimeo
Finance · 119,167 records
119,167 records exposed, Email addresses, Names
5 May 2026
High3 May 2026
Marcus & Millichap
Government · 1,837,078 records
1,837,078 records exposed, Email addresses, Employers, Job titles, Names and 2 more
3 May 2026
High2 May 2026
ZenBusiness
Finance · 5,118,184 records
5,118,184 records exposed, Email addresses, Names, Phone numbers
2 May 2026
Critical1 May 2026
Instructure (Canvas)
Education · 275,000,000 records
Canvas platform breach affected schools nationwide; ShinyHunters claimed 275M records. Parent company struck a deal with hackers to delete the stolen data.
1 May 2026
High1 May 2026
Canvas (Education Platform)
Education · Records not stated
Ransomware attack shut down education platform used by thousands of US universities and K-12 schools during finals week
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Ransomware attack shut down education platform used by US universities and K-12 schools
1 May 2026
Critical1 May 2026
Instructure Canvas
Education · Records not stated
Canvas learning management system breach affected millions of students' personal data
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Ransomware attack shut down education platform used by thousands of schools during finals week
1 May 2026
High1 May 2026
Atrium Health Navicent
Healthcare · Records not stated
Patient records system breach potentially exposed patient records and personal information
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients impacted in largest healthcare data breach of 2026; dental benefits administrator breached in May
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Ongoing data extortion attack on education technology platform affecting schools nationwide
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients impacted, largest healthcare data breach of 2026, occurred in May
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Education technology platform targeted by data extortion attack affecting schools nationwide
1 May 2026
Critical1 May 2026
Foxconn
Technology · Records not stated
Ransomware attack; hackers stole 8 terabytes of data from electronics manufacturer
1 May 2026
Critical1 May 2026
Canvas
Education · Records not stated
Ransomware attack shut down education platform used by thousands of universities and K-12 schools during finals week
1 May 2026
High1 May 2026
Canvas (education platform)
Education · Records not stated
Ransomware attack shut down platform used by thousands of schools and universities
1 May 2026
High1 May 2026
Canvas
Education · Records not stated
Data extortion attack on education platform disrupted schools and colleges nationwide
1 May 2026
Were you affected?