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.
5,287
Disclosures in the tracker, all years
2,001
Of those, indexed in 2026
49
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 17 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
High22 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
Ransomware attack affecting patients and families in 2024
22 Sep 2026
High22 Sep 2026
DISA Global Solutions
Sector not stated · 3,300,000 records
3.3 million people affected by data breach in 2024
22 Sep 2026
High22 Sep 2026
Dell
Technology · Records not stated
Data breach; sensitive user data exposed
22 Sep 2026
High22 Sep 2026
Sax Accounting Firm
Finance · Records not stated
Top US accounting firm discloses 2024 data breach impacting 220,000
22 Sep 2026
Critical22 Sep 2026
Columbia University
Education · 860,000 records
Hacker stole SSNs and personal data of 860,000 individuals
22 Sep 2026
High22 Sep 2026
Paylogix
Technology · Records not stated
Employee benefits platform; hackers stole financial data via Akira ransomware
22 Sep 2026
High22 Sep 2026
Covenant Health
Healthcare · 480,000 records
Data breach impacts nearly 480,000 people
22 Sep 2026
High22 Sep 2026
Kaplan
Education · Records not stated
Education company reports data breach impacting multiple users
22 Sep 2026
High22 Sep 2026
Lovesac
Retail · Records not stated
Data breach confirmed after ransomware attack
22 Sep 2026
Critical22 Sep 2026
CHC
Healthcare · 1,000,000 records
US healthcare provider breach impacts 1 million patients
22 Sep 2026
High22 Sep 2026
Estée Lauder
Retail · Records not stated
Data breach via Oracle E-Business flaw
22 Sep 2026
High22 Sep 2026
Novocure
Healthcare · Records not stated
Data breach affects more than 1,400 cancer patients
22 Sep 2026
Critical22 Sep 2026
TransUnion
Finance · Records not stated
Over 4 million Americans' personal information including SSNs exposed
22 Sep 2026
Critical22 Sep 2026
Welltok
Healthcare · 14,760,000 records
MOVEit Transfer breach exposed 14.76 million individuals' healthcare data at Denver-based patient health company
22 Sep 2026
High22 Sep 2026
Line Yahoo
Technology · Records not stated
Data leak confirmed after ending Naver ties in Japan
22 Sep 2026
Critical22 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
22 Sep 2026
Critical22 Sep 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack exposed 788,000 financial records including names, addresses, and card numbers
22 Sep 2026
Critical22 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach exposed over 100 million customers across two separate incidents in 2024
22 Sep 2026
Critical22 Sep 2026
Intesa Sanpaolo S.p.A.
Finance · Records not stated
Employee unlawfully accessed customer data for over 2 years; fined €31.8m
22 Sep 2026
Critical22 Sep 2026
MCBS
Healthcare · 1,200,000 records
Data breach at Atlanta-based medical business management company affected 1.2 million individuals
22 Sep 2026
Critical22 Sep 2026
Medical Billing Company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people to dark web
22 Sep 2026
Critical22 Sep 2026
Canadian Tire
Retail · 42,000,000 records
2025 data breach exposed 42 million records
22 Sep 2026
Critical22 Sep 2026
Qantas
Sector not stated · Records not stated
Human error exposed 5.7 million passenger records
22 Sep 2026
Critical22 Sep 2026
Coupang
Retail · 33,700,000 records
Data breach exposed 33.7 million accounts, resulting in $409 million fine from South Korea
22 Sep 2026
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