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
2,016
Of those, indexed in 2026
67
Added in October
19
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.
- Hong Kong16 Oct 2026AOMEI Backupper usersHow they got in: a supplier or vendor that was compromised first.The Hacker News
High15 Aug 2026
France Travail
Government · Records not stated
Information system hacked in Q1 2024, resulted in €5 million CNIL fine
15 Aug 2026
High15 Aug 2026
Cell C
Technology · Records not stated
South African telecom provider disclosed data breach following 2024 cyberattack
15 Aug 2026
High15 Aug 2026
Mizuno
Retail · Records not stated
Japanese sportswear company confirmed data breach following 2024 ransomware attack affecting customers
15 Aug 2026
Critical15 Aug 2026
Star Health
Healthcare · Records not stated
Indian health insurer suffered data breach; hacker leaked sensitive personal data of customers
15 Aug 2026
Critical15 Aug 2026
UnitedHealthcare
Healthcare · Records not stated
Cyberattack exposed sensitive health and insurance data from millions of patients
15 Aug 2026
High15 Aug 2026
Legal Aid Agency
Legal · Records not stated
Cyber attack exposed data in 2025; compensation claims filed
15 Aug 2026
Critical15 Aug 2026
Bankinter (EVO Banco)
Finance · Records not stated
API vulnerability exposed 1.27 million financial and identity records in 2024
15 Aug 2026
High15 Aug 2026
Cerner
Healthcare · Records not stated
2025 breach of healthcare patient data leading to lawsuits from affected hospital systems
15 Aug 2026
High15 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach affecting nearly 170,000 individuals
15 Aug 2026
Critical15 Aug 2026
Medical Billing Company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposing sensitive health data on 1.3 million people
15 Aug 2026
Critical15 Aug 2026
Change Healthcare
Healthcare · 100,000,000 records
2024 ransomware attack affecting UnitedHealth Group subsidiary
15 Aug 2026
Critical15 Aug 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized access exposed PHI of 3.4 million individuals
15 Aug 2026
Critical15 Aug 2026
Instructure Canvas
Education · Records not stated
Supply chain breach generating 58% of breach notices in 2026, affecting educational institutions
15 Aug 2026
Critical15 Aug 2026
Instructure
Education · Records not stated
Canvas platform supply chain breach generated 58% of all 2026 breach notices affecting multiple organizations
15 Aug 2026
High15 Aug 2026
Comcast
Technology · 35,000,000 records
Xfinity data breach exposed personal information; $117.5M settlement with customers
15 Aug 2026
Critical15 Aug 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company data breach exposed 1.2 million individuals' personal information
15 Aug 2026
Medium15 Aug 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
CRPx0 made the news last month for its somewhat novel approach of offering free OnlyFans accounts to get victims to click links that would deploy its malware. Since August 7, when it launched a leak site on both the…
15 Aug 2026
Medium15 Aug 2026
Hyeon Ye-Seul
Education · Records not stated
Hyeon Ye-Seul reports: Personal information belonging to roughly 180,000 students, alumni and staff at Sogang University was exposed in a cyberattack, the university said Saturday. The university said it had confirmed…
15 Aug 2026
High15 Aug 2026
Computer Country Networks Canada
Technology · Records not stated
Blacknevas ransomware struck Ontario IT provider
15 Aug 2026
Critical15 Aug 2026
EY Client Platform
Finance · Records not stated
Client documents exfiltrated via third-party platform
15 Aug 2026
Medium14 Aug 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
The exfiltrated data may be related to misconfiguration of Microsoft Power Page portals, according to a new report.
14 Aug 2026
Critical14 Aug 2026
Organisation not named
Sector not stated · 7,300,000 records
The disclosure as indexed does not name the organisation.
7.3 million Chess.com profiles leaked online: the data is genuine, but evidence points to large-scale scraping, not a server breach. Free is a strange price for stolen data, and that’s exactly what makes this…
14 Aug 2026
High14 Aug 2026
Clover Health
Healthcare · Records not stated
Data breach disclosed in securities filing; type and scope of exposed data not yet determined
14 Aug 2026
Critical14 Aug 2026
Origin Energy
Sector not stated · Records not stated
Data breach affected approximately 900,000 current and former customers; personal information exposed
14 Aug 2026
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