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.
5,278
Disclosures in the tracker, all years
1,991
Of those, indexed in 2026
36
Added in October
13
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 13 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,944 results · Disclosures in 2026. Clear filters
Critical16 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacted 3.8 million individuals
16 Sep 2026
High16 Sep 2026
Krispy Kreme
Retail · 160,000 records
Over 160,000 people had data stolen in 2024 attack
16 Sep 2026
Critical16 Sep 2026
MGM
Retail · Records not stated
2019 data breach; agreed $45 million settlement
16 Sep 2026
High16 Sep 2026
16 Sep 2026
High16 Sep 2026
UK Legal Aid Agency
Government · Records not stated
Massive data breach following government hack
16 Sep 2026
High16 Sep 2026
University of Hawaiʻi Cancer Center
Healthcare · Records not stated
Data leak following ransomware attack
16 Sep 2026
Critical16 Sep 2026
700Credit
Finance · 10,000,000 records
Data breach affecting nearly 10 million people
16 Sep 2026
Critical16 Sep 2026
Prosper
Finance · 10,000,000 records
Data breach affecting nearly 10 million people
16 Sep 2026
High16 Sep 2026
Kaplan
Education · Records not stated
Education company reported data breach impacting users
16 Sep 2026
High16 Sep 2026
Substack
Technology · Records not stated
Newsletter platform notified users of data breach
16 Sep 2026
High16 Sep 2026
Dartmouth College
Education · Records not stated
Data breach after Clop extortion attack
16 Sep 2026
High16 Sep 2026
Cisco
Technology · Records not stated
Data breach impacting Cisco.com user accounts
16 Sep 2026
Critical16 Sep 2026
Conduent
Healthcare · Records not stated
Ransomware breach stealing 8TB of files from document processing company affecting healthcare sector
16 Sep 2026
Critical16 Sep 2026
FinWise Bank
Finance · 689,000 records
Insider data breach affecting 689,000 customers' personal information
16 Sep 2026
Critical16 Sep 2026
Rockstar Games
Technology · Records not stated
Data breach through Snowflake platform via Anodot access compromise
16 Sep 2026
Critical16 Sep 2026
Ticketmaster
Technology · 560,000,000 records
Data breach through Snowflake platform, part of 165-company attack campaign
16 Sep 2026
High16 Sep 2026
Kirkland & Ellis
Legal · Records not stated
Law firm affected by MOVEit Transfer data breach
16 Sep 2026
Critical16 Sep 2026
Welltok
Healthcare · 14,760,000 records
MOVEit Transfer breach affecting 14.76 million individuals in healthcare/patient data
16 Sep 2026
High16 Sep 2026
Sax
Sector not stated · Records not stated
2024 data breach disclosed in December 2025
16 Sep 2026
High16 Sep 2026
TransUnion
Finance · 37,000 records
37,000 people affected, exposing credit and personal data in 2019 breach
16 Sep 2026
Critical16 Sep 2026
French Telco Subsidiaries
Technology · 24,000,000 records
Cybersecurity vulnerabilities contributed to breach of 24 million customer records
16 Sep 2026
Critical16 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach exposed over 100 million customers across two separate incidents
16 Sep 2026
High16 Sep 2026
University of Western Australia
Education · Records not stated
Accidental data leak of student records; second breach in six months
16 Sep 2026
Critical16 Sep 2026
UC Berkeley Canvas
Education · 600,000 records
Cybercrime group claimed 600K records stolen from learning management platform bCourses
16 Sep 2026
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