Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker
Disclosures in 2026
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.
5,299
Disclosures in the tracker, all years
2,012
Of those, indexed in 2026
58
Added in October
15
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,981 results · Disclosures in 2026. Clear filters
High4 Apr 2026
4 Apr 2026
High1 Apr 2026
Nissan
Sector not stated · Records not stated
Data breach involving third-party vendor holding customer information
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
46,666 patients affected, personal and health information exposed
1 Apr 2026
Critical1 Apr 2026
ANTS (France)
Government · 19,000,000 records
19 million records exposed from French national ID agency, personal data breach
1 Apr 2026
High1 Apr 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
April 2026 data breach led to eight class-action lawsuits over exposed customer payment and personal data
1 Apr 2026
High1 Apr 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
Data breach in April 2026, triggered 8 class action lawsuits
1 Apr 2026
High1 Apr 2026
Legend Senior Care
Healthcare · Records not stated
Ransomware attack on senior care provider
1 Apr 2026
High1 Apr 2026
Windward Life Care
Healthcare · Records not stated
Ransomware attack on senior care provider in California
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach affects 46,666 patients, exposing personal and health information
1 Apr 2026
High1 Apr 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
April 2026 data breach resulted in eight class-action lawsuits
1 Apr 2026
High1 Apr 2026
Line Yahoo
Technology · Records not stated
Data leak resulted in ending of Naver ties and shift in control debate in Japan
1 Apr 2026
Critical1 Apr 2026
ANTS (French ID Agency)
Government · 19,000,000 records
Major cyberattack exposed 19 million records from France's national identity agency
1 Apr 2026
Critical1 Apr 2026
Intesa Sanpaolo S.p.A.
Finance · Records not stated
Employee insider threat unlawfully accessed data for over two years; €31.8M fine imposed
1 Apr 2026
High1 Apr 2026
Legend Senior Care
Healthcare · Records not stated
Senior care provider affected by ransomware attack with data security incident
1 Apr 2026
High1 Apr 2026
Windward Life Care
Healthcare · Records not stated
Senior care provider in California affected by ransomware attack with data security incident
1 Apr 2026
High1 Apr 2026
Veradigm
Healthcare · Records not stated
Electronic health record company had customer data stolen after vendor system infiltration
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach exposed personal and health records of approximately 46,666 patients.
1 Apr 2026
High1 Apr 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
Customer data breach from April 2026, subject of 8 class action lawsuits
1 Apr 2026
High1 Apr 2026
Ryanair
Sector not stated · Records not stated
Breach exposing legal emails, flight data, and banking details claimed on hacker forum
1 Apr 2026
Critical1 Apr 2026
UK Biobank
Healthcare · Records not stated
De-identified health records of 500,000+ Britons offered for sale on Chinese website
1 Apr 2026
High1 Apr 2026
Legend Senior Care
Healthcare · Records not stated
Ransomware attack disclosed affecting senior care provider
1 Apr 2026
High1 Apr 2026
Windward Life Care
Healthcare · Records not stated
Ransomware attack disclosed affecting senior care provider in California
1 Apr 2026
High1 Apr 2026
Nissan
Technology · Records not stated
Hacking group breached file-transfer system of third-party vendor serving Nissan and Infiniti
1 Apr 2026
Critical1 Apr 2026
ANTS (France)
Government · 19,000,000 records
Cyberattack on France's identity agency exposed 19 million records including personal data
1 Apr 2026
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