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.
5,301
Disclosures in the tracker, all years
2,015
Of those, indexed in 2026
62
Added in October
18
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 19 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.
65 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.
- Australia19 Oct 2026Poole GroupThe source does not say how they got in.Accountants Daily
- Australia16 Oct 2026Chadwick SwitchboardsThe source does not say how they got in.Cyber Daily
Critical23 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
3.8 million people impacted in data breach
23 Sep 2026
Critical23 Sep 2026
TransUnion
Finance · 4,400,000 records
4.4 million people impacted with personal information including Social Security numbers exposed
23 Sep 2026
High23 Sep 2026
Optus
Technology · Records not stated
2022 cyber breach involving customer data, privacy regulator sued for breach of privacy laws
23 Sep 2026
High23 Sep 2026
Renault Group
Retail · Records not stated
UK customer data stolen in third-party breach affecting auto industry
23 Sep 2026
Critical23 Sep 2026
SK Telecom
Technology · Records not stated
Massive data leak; ordered to pay 100,000 won ($67) compensation per affected user
23 Sep 2026
High23 Sep 2026
Free Mobile and Free
Technology · Records not stated
Data theft affecting thousands of customers; fined €49 million by CNIL with 2500+ complaints
23 Sep 2026
Critical23 Sep 2026
French Telecom Subsidiaries
Technology · 24,000,000 records
2024 breach of 24 million customers; fined €42M for security vulnerabilities and lack of basic controls
23 Sep 2026
High23 Sep 2026
Lands' End
Retail · Records not stated
Data breach impacted clothing retailer customers; case settled with compensation
23 Sep 2026
Critical23 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
23 Sep 2026
High23 Sep 2026
Bedfordshire Hospital
Healthcare · Records not stated
Cyber attack exposed patient names, NHS numbers and test results
23 Sep 2026
High23 Sep 2026
Essex NHS Trust
Healthcare · 900,000 records
NHS trust breach compromised thousands of patient records, disclosed over 6 months after notification
23 Sep 2026
High22 Sep 2026
KT
Technology · Records not stated
Data breach via illegal base stations, fined 54 billion Won
22 Sep 2026
Critical22 Sep 2026
Free Mobile
Technology · Records not stated
Major data theft resulting in €49 million fine from CNIL France
22 Sep 2026
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
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