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.
5,344
Disclosures in the tracker, all years
2,057
Of those, indexed in 2026
118
Added in October
15
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 26 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.
74 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.
- France20 Oct 2026US tax preparation businessesThe source does not say how they got in.The Record
Critical1 Apr 2026
UK Biobank
Healthcare · Records not stated
Private health records of 500,000 Britons offered for sale on Chinese website (Alibaba)
1 Apr 2026
High1 Apr 2026
Ryanair
Sector not stated · Records not stated
Breach exposing court documents, legal emails, flight data, and banking details; data claimed on hacker forums
1 Apr 2026
Critical1 Apr 2026
US Government Agency
Government · Records not stated
Unnamed federal department breached through Cisco vulnerability; FIRESTARTER backdoor allowed persistent access through March
1 Apr 2026
Critical1 Apr 2026
UK Biobank
Healthcare · Records not stated
Private health records of 500,000 Britons offered for sale on Chinese website Alibaba
1 Apr 2026
High1 Apr 2026
Nissan
Technology · Records not stated
Data stolen from third-party vendor's file-transfer system used by Nissan and Infiniti
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach exposed personal and health information of 46,666 patients
1 Apr 2026
Critical1 Apr 2026
ANTS (French ID Agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records including personal data linked to identity documents
1 Apr 2026
High1 Apr 2026
Signature Healthcare Brockton Hospital
Healthcare · Records not stated
Ransomware cyberattack causing system downtime; clinics offline for two weeks
1 Apr 2026
Critical1 Apr 2026
ANTS (French ID Agency)
Government · 19,000,000 records
Cyberattack exposed 19M records including personal identity data
1 Apr 2026
Critical1 Apr 2026
Intesa Sanpaolo S.p.A.
Finance · Records not stated
Employee unlawfully accessed customer data over 2+ years; €31.8M fine
1 Apr 2026
High1 Apr 2026
Ryanair
Sector not stated · Records not stated
Court documents, flight data, and banking details exposed in hacker forum
1 Apr 2026
High1 Apr 2026
Nissan
Technology · Records not stated
Third-party vendor file-transfer system breach exposed data from services used by Nissan and Infiniti
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
46,666 patients' personal and health information exposed
1 Apr 2026
Critical1 Apr 2026
UK Biobank
Healthcare · Records not stated
Private health records of 500,000 Britons offered for sale on Chinese website
1 Apr 2026
Critical1 Apr 2026
Intesa Sanpaolo S.p.A.
Finance · Records not stated
Employee unlawfully accessed customer data over two years, €31.8M fine for breach transparency
1 Apr 2026
Critical1 Apr 2026
US Government Agency (CISA)
Government · Records not stated
Breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March
1 Apr 2026
High1 Apr 2026
Nissan
Technology · Records not stated
Hacking group breached file-transfer system used by third-party vendor serving Nissan and Infiniti
1 Apr 2026
High1 Apr 2026
Legend Senior Care
Healthcare · Records not stated
Senior care provider affected by ransomware attack disclosing data security incident
1 Apr 2026
High1 Apr 2026
Windward Life Care
Healthcare · Records not stated
Senior care provider affected by ransomware attack disclosing data security incident
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach affected 46,666 patients exposing personal and health records
1 Apr 2026
Critical1 Apr 2026
ANTS (France)
Government · 19,000,000 records
Cyberattack on France's identity agency exposed 19 million records with personal data
1 Apr 2026
Critical1 Apr 2026
Intesa Sanpaolo
Finance · Records not stated
Insider threat breach with employee unlawfully accessing customer data for over two years
1 Apr 2026
High1 Apr 2026
Nissan
Retail · Records not stated
Hacking group breached file-transfer system used by third-party vendor
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
46,666 patients affected with personal and health records exposed
1 Apr 2026
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