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.
5,292
Disclosures in the tracker, all years
2,005
Of those, indexed in 2026
50
Added in October
9
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.
- Netherlands7 Oct 2026Jeppesen ForeFlightThe source does not say how they got in.Krebs on Security
Critical15 Sep 2026
Change Healthcare
Healthcare · 100,000,000 records
2024 ransomware attack exposed sensitive healthcare data
15 Sep 2026
Critical15 Sep 2026
Bankinter (EVO Banco)
Finance · 1,270,000 records
1.27M records exposed via API vulnerability including financial and identity data
15 Sep 2026
Critical14 Sep 2026
Japan's Digital Agency
Government · 246,000 records
Japan's Digital Agency has discovered a data breach that may have exposed around 246,000 record rows containing personal information of government employees.
14 Sep 2026
Medium14 Sep 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
A mass-scanning campaign targeting internet-exposed Vite development servers is attempting to steal cloud credentials and configurations from AWS and Azure deployments.
14 Sep 2026
Critical14 Sep 2026
DISA Global Solutions
Sector not stated · 3,300,000 records
Data breach in 2024 impacted more than 3.3 million individuals
14 Sep 2026
Critical14 Sep 2026
T-Mobile
Technology · 64,000,000 records
Over 64 million customer records leaked online by hackers
14 Sep 2026
High14 Sep 2026
DocketWise
Legal · 143,000 records
Data breach affected 143,000 individuals
14 Sep 2026
Critical14 Sep 2026
Columbia University
Education · 860,000 records
Data breach impacted 860,000 individuals with personal information exposed
14 Sep 2026
High14 Sep 2026
Pierce County Library
Education · 340,000 records
Data breach exposed personal information of 340,000 individuals
14 Sep 2026
High14 Sep 2026
Centers Laboratory
Healthcare · 540,000 records
Data breach affects 540,000 individuals
14 Sep 2026
Critical14 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacts 3.8 million individuals
14 Sep 2026
High14 Sep 2026
MCBS
Healthcare · 1,200,000 records
Data breach affects 1.2 million individuals
14 Sep 2026
High14 Sep 2026
Covenant Health
Healthcare · 480,000 records
Qilin ransomware attack impacted nearly 480,000 individuals
14 Sep 2026
High14 Sep 2026
ADT
Sector not stated · 30,814 records
Customer data stolen in cyber intrusion
14 Sep 2026
High14 Sep 2026
Ransomware attack resulted in data
Healthcare · Records not stated
Ransomware attack resulted in data leak of patient information
14 Sep 2026
Critical14 Sep 2026
700Credit
Finance · 5,800,000 records
Data breach impacts 5.8 million individuals with credit information
14 Sep 2026
Critical14 Sep 2026
Prosper
Finance · 20,000,000 records
Data breach impacting approximately 20 million people
14 Sep 2026
High14 Sep 2026
Kaplan
Education · Records not stated
Education company reports data breach impacting customers
14 Sep 2026
Critical14 Sep 2026
Cyberattack compromised personal data of 4.62 million users
Sector not stated · 4,620,000 records
Cyberattack compromised personal data of 4.62 million users
14 Sep 2026
High14 Sep 2026
FinWise Bank
Finance · 689,000 records
Insider data breach impacting 689,000 customers
14 Sep 2026
High14 Sep 2026
Cell C
Technology · Records not stated
Data breach following cyberattack affecting South African telecom provider
14 Sep 2026
High14 Sep 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting government-run network of healthcare testing laboratories
14 Sep 2026
High14 Sep 2026
Mizuno
Retail · Records not stated
Ransomware attack exposed customer data in 2024
14 Sep 2026
Critical14 Sep 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack in 2025 exposing 672,000-788,000 financial records including names, addresses, card numbers
14 Sep 2026
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