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.
5,324
Disclosures in the tracker, all years
2,038
Of those, indexed in 2026
86
Added in October
22
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 21 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.
72 incidents from 9 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.
- United States21 Oct 2026Critical infrastructure organizations worldwideHow they got in: stolen or reused passwords.BleepingComputer
- United States20 Oct 2026Conduent Business Services, LLCThe source does not say how they got in.HIPAA Journal
- United States20 Oct 2026Central Ohio Primary Care PhysiciansHow they got in: stolen or reused passwords.HIPAA Journal
- United States20 Oct 2026Educational Testing ServiceThe source does not say how they got in.The Record
- United States20 Oct 2026Chevy Chase ClubThe source does not say how they got in.Vermont Attorney General
- United States20 Oct 2026Paradigm Healthcare ServicesThe source does not say how they got in.SecurityWeek
- United States19 Oct 2026Computer Task Group, IncorporatedThe source does not say how they got in.Vermont Attorney General
- United States19 Oct 2026Citizens BankThe source does not say how they got in.California Attorney General
- United States19 Oct 2026STS Aviation GroupThe source does not say how they got in.California Attorney General
- United States18 Oct 2026Stitch Connect IncThe source does not say how they got in.California Attorney General
- United States17 Oct 2026Catawba CountyThe source does not say how they got in.Vermont Attorney General
- United States16 Oct 2026Johnson Investment CounselThe source does not say how they got in.Vermont Attorney General
High31 Jul 2026
TransUnion
Finance · Records not stated
Among the seven largest banking data breaches of 2025
31 Jul 2026
High31 Jul 2026
700Credit
Finance · Records not stated
Among the seven largest banking data breaches of 2025
31 Jul 2026
High31 Jul 2026
Prosper Marketplace
Finance · Records not stated
Among the seven largest banking data breaches of 2025
31 Jul 2026
High31 Jul 2026
KT Corp
Technology · Records not stated
Data breach resulting in substantial fine from South Korea's Personal Information Protection Commission
31 Jul 2026
High31 Jul 2026
FinWise Bank
Finance · 689,000 records
Data breach affecting 689,000 users with unencrypted personal data accessed
31 Jul 2026
High31 Jul 2026
Unnamed Law Firm
Legal · 13,000 records
Hospital patient records for 13,000 patients in New Jersey exposed via cyberattack
31 Jul 2026
Critical31 Jul 2026
U.S. Civil Service/White House
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including some linked to White House
31 Jul 2026
Critical31 Jul 2026
Gaming accounts (multiple)
Technology · Records not stated
11 million gaming account credentials exposed in 2024 data leaks discovered by Kaspersky
31 Jul 2026
Critical31 Jul 2026
Gaming accounts (Kaspersky research)
Technology · Records not stated
Over 11 million gaming account credentials exposed and found on dark web
31 Jul 2026
High31 Jul 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of patient records stolen in major ransomware cyberattack affecting NHS trust in Essex
31 Jul 2026
Critical31 Jul 2026
Medical billing company
Healthcare · 1,300,000 records
Ransomware attack exposed protected health data on 1.3 million people; data leaked to dark web
31 Jul 2026
Critical31 Jul 2026
ANTS
Government · 19,000,000 records
Cyberattack on France's identity agency exposed 19 million records with personal data linked to ID documents
31 Jul 2026
High31 Jul 2026
Cherry Creek School District
Education · Records not stated
Data breach exposed student information, lawsuit filed
31 Jul 2026
High31 Jul 2026
Data security incident
Retail · Records not stated
Data security incident exposed personal information, $40M settlement reached
31 Jul 2026
Medium31 Jul 2026
Illuminate Education
Education · Records not stated
Edtech company data breach leading to FTC settlement and data security program requirements
31 Jul 2026
Critical31 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
Healthcare billing company network breach exposed sensitive data affecting 1.26 million people
31 Jul 2026
High31 Jul 2026
KT Corp
Technology · Records not stated
South Korea telecom giant hit with massive data breach fine by Personal Information Protection Commission
31 Jul 2026
Critical31 Jul 2026
Transport for London (TfL)
Government · Records not stated
Cyber attack caused £39m loss; hackers gained access to transport network core systems
31 Jul 2026
Critical31 Jul 2026
EVO Banco
Finance · 1,270,000 records
2024 API vulnerability exposed financial and identity data of 1.27 million records
31 Jul 2026
High31 Jul 2026
Intesa Sanpaolo S.p.A.
Finance · Records not stated
Employee unlawfully accessed customer data over two years, €31.8m impact
31 Jul 2026
High31 Jul 2026
Synnovis/NHS Essex
Healthcare · 900,000 records
Thousands of patient records stolen in ransomware attack affecting NHS trust in Essex
31 Jul 2026
Critical31 Jul 2026
McLaren Health Care
Healthcare · Records not stated
Ransomware attacks in 2023 and 2024 exposed data on 3.2 million victims
31 Jul 2026
Critical31 Jul 2026
Instructure
Education · Records not stated
Supply chain breach involving Canvas platform generated over 50% of breach notices in 2026
31 Jul 2026
High31 Jul 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
Data breach with cybersecurity vulnerabilities; fined €42 million by French regulator in Jan 2026
31 Jul 2026
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