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.
5,475
Disclosures in the tracker, all years
2,009
Of those, indexed in 2026
58
Added in October
14
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.
3,981 results · Disclosures in 2026. Clear filters
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen during major ransomware attack disrupting healthcare services
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack; disclosure more than six months after notification
1 Jun 2026
Critical1 Jun 2026
Department for Education
Government · 607,000 records
Cyber attack exposed approximately 607,000 records
1 Jun 2026
Critical1 Jun 2026
Fortinet FortiGate
Technology · Records not stated
FortiBleed exposed verified admin credentials for 73,000+ firewall and VPN devices
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen in major ransomware cyberattack
1 Jun 2026
Critical1 Jun 2026
Unknown (Elasticsearch database)
Sector not stated · Records not stated
Publicly exposed Elasticsearch database leaked 24 billion stolen credentials; largest infostealer log compilation
1 Jun 2026
Critical1 Jun 2026
Medical billing company (unnamed)
Healthcare · 1,300,000 records
Ransomware attack exposed 1.3M people's protected health data leaked to dark web in 2025
1 Jun 2026
High1 Jun 2026
Ernst & Young (EY)
Finance · Records not stated
Tax client data exposed via third-party vendor breach with 81-day delay in notifying customers
1 Jun 2026
High1 Jun 2026
FirstClass Travel
Sector not stated · Records not stated
Customer records allegedly breached at Australian travel agency
1 Jun 2026
High1 Jun 2026
Ernst & Young
Finance · Records not stated
Third-party vendor breach exposed tax client data after 81-day delay in notification
1 Jun 2026
High1 Jun 2026
Tata Electronics
Technology · Records not stated
Data breach confirmed affecting major tech supplier to Apple and Tesla
1 Jun 2026
High1 Jun 2026
FirstClass Travel Agency
Retail · Records not stated
Customer records allegedly breached by threat actors operating on underground forums
1 Jun 2026
High1 Jun 2026
Bank of Baroda
Finance · Records not stated
Cyber incident after employee email account compromised allowing unauthorized data access
1 Jun 2026
Critical1 Jun 2026
Aflac
Finance · 1,300,000 records
Aflac Japan data breach exposed 4.38M customers in June 2026; company's second major hack in over a year
1 Jun 2026
Critical1 Jun 2026
Japanese Telco (unnamed)
Technology · 12,000,000 records
Cyberattack exposed 12 million customer email accounts and webmail services
1 Jun 2026
Critical1 Jun 2026
Fortinet (FortiBleed)
Technology · Records not stated
FortiBleed campaign exposed verified administrator credentials for 73,000+ devices
1 Jun 2026
Critical1 Jun 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patients; healthcare billing and practice-management data breached
1 Jun 2026
High1 Jun 2026
FirstClass
Sector not stated · Records not stated
Australian travel agency hit by alleged data breach with customer records exposed on underground hacking forums
1 Jun 2026
High1 Jun 2026
Charter Communications (Spectrum)
Technology · Records not stated
Data breach at internet service provider exposing customer records, facing lawsuits
1 Jun 2026
High1 Jun 2026
Law firm (unnamed)
Legal · 13,000 records
Cyberattack exposed hospital patient records for 13K patients in New Jersey
1 Jun 2026
Critical1 Jun 2026
Medical Billing Company
Healthcare · 1,300,000 records
2025 ransomware attack leaked protected health data on 1.3 million people to dark web
1 Jun 2026
Critical1 Jun 2026
Accenture
Technology · Records not stated
Threat actor claims to have stolen sensitive data from consulting giant in recent cyberattack
1 Jun 2026
Critical1 Jun 2026
AssuranceAmerica
Finance · 6,900,000 records
Data breach exposed personal information and driver's license numbers of 6.9 million people
1 Jun 2026
Critical1 Jun 2026
Major Japanese Telco
Technology · 12,000,000 records
Cyberattack exposed 12 million email accounts and related customer data
1 Jun 2026
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