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.
5,352
Disclosures in the tracker, all years
2,066
Of those, indexed in 2026
125
Added in October
17
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 27 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.
75 incidents from 12 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
- Denmark26 Oct 2026University of CopenhagenThe source does not say how they got in.BleepingComputer
High1 Dec 2025
FirstClass Travel Agency
Sector not stated · Records not stated
Customer records allegedly breached by threat actor on underground forums
1 Dec 2025
High1 Dec 2025
South Florida Injury Centers
Healthcare · 1,525 records
Data breach exposed 1,525 individuals' SSNs and medical records (PHI/PII)
1 Dec 2025
Critical1 Dec 2025
Amgen
Healthcare · Records not stated
Cloud data breach exposed patient health information and proprietary data
1 Dec 2025
Critical1 Dec 2025
Mexican Government (9 agencies)
Government · Records not stated
Multiple federal agencies compromised using Claude Code and ChatGPT, millions of records stolen
1 Dec 2025
Critical1 Dec 2025
Medical Billing Company
Healthcare · 1,300,000 records
2025 ransomware attack exposed sensitive protected health data on 1.3 million people, leaked to dark web in June 2026
1 Dec 2025
High1 Dec 2025
FirstClass
Sector not stated · Records not stated
Australian travel agency customer records allegedly breached and disclosed on hacking forums
1 Dec 2025
High1 Dec 2025
Home Depot
Retail · Records not stated
Leaked GitHub token exposed internal systems with write permissions to private repos for one year
1 Dec 2025
High1 Dec 2025
Thailand Ministry of Finance
Government · Records not stated
Hackers used autonomous AI agent for cyber-espionage campaign against finance ministry
1 Dec 2025
Critical1 Dec 2025
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company network breach exposed sensitive patient data affecting 1.26 million people
1 Dec 2025
Critical1 Dec 2025
Healthcare billing company network breach
Healthcare · 1,260,000 records
Healthcare billing company network breach exposed sensitive data of 1.26 million people
1 Dec 2025
Critical1 Dec 2025
TransUnion
Finance · Records not stated
One of seven largest banking data breaches of 2025
1 Dec 2025
High1 Dec 2025
700Credit
Finance · Records not stated
One of seven largest banking data breaches of 2025
1 Dec 2025
High1 Dec 2025
Prosper Marketplace
Finance · Records not stated
One of seven largest banking data breaches of 2025
1 Dec 2025
High1 Dec 2025
KT Corporation
Technology · Records not stated
Customer data breach resulting in $39 million fine from South Korea's PIPC
1 Dec 2025
Critical1 Dec 2025
Network breach
Healthcare · 1,260,000 records
Network breach exposed sensitive healthcare data affecting 1.26 million people
1 Dec 2025
Critical1 Dec 2025
Mexican Government
Government · Records not stated
Federal government breach exposed millions of records between late Dec 2025 and mid-Feb 2026
1 Dec 2025
High1 Dec 2025
Leroy Merlin France
Retail · Records not stated
Loyalty program data breach exposing customer personal and payment information
1 Dec 2025
High1 Dec 2025
Illuminate Education
Education · Records not stated
Data breach leading to FTC settlement requiring security program implementation
1 Dec 2025
Medium1 Dec 2025
Sax
Sector not stated · Records not stated
Data breach disclosed covering 2024 data
1 Dec 2025
High1 Dec 2025
Post Office Limited
Government · Records not stated
Data breach affecting Horizon IT scandal victims caused by entirely preventable security failure
1 Dec 2025
Critical1 Dec 2025
SK Telecom
Technology · Records not stated
Massive data leak - Korea's consumer agency ordered compensation of $67 per user to affected customers.
1 Dec 2025
Critical1 Dec 2025
Coupang
Retail · 33,700,000 records
Data breach exposed personal information of 33.7 million customers
1 Dec 2025
Critical1 Dec 2025
Marquis
Finance · Records not stated
Ransomware attack stole banking customer data including personal information and financial records
1 Dec 2025
Critical1 Dec 2025
Marquis Software Solutions
Finance · 788,000 records
Unauthorized access to sensitive information of 788,000 customers of banks and credit institutions
1 Dec 2025
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