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.
5,291
Disclosures in the tracker, all years
2,004
Of those, indexed in 2026
49
Added in October
8
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 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.
64 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.
- Germany6 Oct 2026Wikimedia FoundationHow they got in: automated AI tools that work through many organizations at once.The Hacker News
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
Critical16 Sep 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack exposed 788,000 financial records from banks and credit union customers
16 Sep 2026
High16 Sep 2026
ADT
Sector not stated · 30,814 records
Data breach exposed customer PII; class action lawsuit filed against home security provider
16 Sep 2026
Critical16 Sep 2026
Bankinter/EVO Banco
Finance · 1,270,000 records
2024 API vulnerability exposed financial and identity data of 1.27 million people in Spain
16 Sep 2026
Medium15 Sep 2026
Houston-based CenterPoint Energy
Government · Records not stated
Houston-based CenterPoint Energy notified federal regulators about an incident that exposed some customer data on the dark web.
15 Sep 2026
Medium15 Sep 2026
CenterPoint Energy
Sector not stated · Records not stated
CenterPoint Energy disclosed a breach compromising some customers' personal information after an attacker leaked data allegedly stolen from the utility company.
15 Sep 2026
High15 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
2024 ransomware attack affecting patients and families
15 Sep 2026
Critical15 Sep 2026
T-Mobile
Technology · 64,000,000 records
Over 64 million records leaked online by hackers
15 Sep 2026
Critical15 Sep 2026
Free Mobile and Free
Technology · Records not stated
Major data theft in France, resulted in €49 million fine from CNIL
15 Sep 2026
High15 Sep 2026
DocketWise
Legal · 143,000 records
Data breach impacted 143,000 individuals
15 Sep 2026
High15 Sep 2026
Estée Lauder
Retail · Records not stated
Data breach from Oracle EBS zero-day hack disclosed
15 Sep 2026
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