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.
5,278
Disclosures in the tracker, all years
1,991
Of those, indexed in 2026
37
Added in October
8
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 14 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,945 results · Disclosures in 2026. Clear filters
High1 Apr 2026
Nissan
Retail · Records not stated
Data breach via compromise of third-party vendor file-transfer system
1 Apr 2026
High1 Apr 2026
Bank of Baroda
Finance · Records not stated
Alleged data breach affecting customer data
1 Apr 2026
Critical1 Apr 2026
US Government Agency (unnamed)
Government · Records not stated
CISA agency breached through Cisco vulnerability; FIRESTARTER backdoor allowed persistent access through March 2026
1 Apr 2026
High1 Apr 2026
CISA (U.S. Federal Agency)
Government · Records not stated
Unnamed U.S. department breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March 2026
1 Apr 2026
Critical1 Apr 2026
Puerto Rico Government Agency
Government · Records not stated
Mapping service exposed 1 million Social Security numbers
1 Apr 2026
High1 Apr 2026
CISA/US Federal Agency
Government · Records not stated
US federal department breached through Cisco vulnerability allowing FIRESTARTER backdoor malware access through March 2026
1 Apr 2026
Critical1 Apr 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Major cyberattack exposing 19 million French citizen identity records
1 Apr 2026
Critical1 Apr 2026
UK BioBank / Alibaba
Healthcare · Records not stated
500,000 Britons' private health records offered for sale on Chinese website; de-identified data advertised
1 Apr 2026
Critical1 Apr 2026
ANTS (French National Agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records from France's identity agency with personal data linked to ID systems
1 Apr 2026
Critical1 Apr 2026
ShinyHunters (multiple brands)
Retail · 9,000,000 records
Hacking group claimed compromise of 9 major brands including Zara, affecting 9M+ records
1 Apr 2026
Critical1 Apr 2026
CISA/US Government
Government · Records not stated
US agency breached via Cisco vulnerability with FIRESTARTER backdoor malware allowing persistent access
1 Apr 2026
Critical1 Apr 2026
Instructure Canvas
Education · 275,000,000 records
ShinyHunters breach claimed 275 million records from 8,809 schools, exposing student and staff data
1 Apr 2026
High1 Apr 2026
CISA/Unnamed US Federal Department
Government · Records not stated
Breach via Cisco vulnerability with FIRESTARTER backdoor malware allowing access through March
1 Apr 2026
High1 Apr 2026
US Department (CISA)
Government · Records not stated
Breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March 2026
1 Apr 2026
High1 Apr 2026
Ransomware attack affected 169,000 patients across two facilities
Healthcare · 169,000 records
Ransomware attack affected 169,000 patients across two facilities
1 Apr 2026
Critical1 Apr 2026
CISA/US Department
Government · Records not stated
US agency breached through Cisco vulnerability, FIRESTARTER backdoor allowed access through March
1 Apr 2026
High1 Apr 2026
Vercel
Technology · Records not stated
OAuth supply chain compromise exposing environment variables through trusted third-party apps
1 Apr 2026
Critical1 Apr 2026
ANTS (France Identity Agency)
Government · 19,000,000 records
19 million records exposed in cyberattack on French national ID agency
1 Apr 2026
Critical1 Apr 2026
ANTS (French Identity Agency)
Government · 19,000,000 records
19 million records exposed in cyberattack on France's national identity agency
1 Apr 2026
High1 Apr 2026
Mexican Government (9 agencies)
Government · Records not stated
Single hacker exploited Claude Code and OpenAI platforms to breach 9 Mexican government agencies
1 Apr 2026
High1 Apr 2026
SISVISA (Brazil)
Healthcare · Records not stated
102,215 Brazilian health surveillance records leaked including IDs and tax data
1 Apr 2026
High1 Apr 2026
Marquis
Technology · 788,000 records
Ransomware attack exposed 672,000-788,000 records; names, addresses, card numbers stolen
1 Apr 2026
High1 Apr 2026
Adams County
Government · Records not stated
Ransomware attack crippled county servers, week-long restoration
1 Apr 2026
High1 Apr 2026
Laurel Eye Clinic
Healthcare · Records not stated
Security incident exposed patient data in ransomware attack
1 Apr 2026
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