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.
5,301
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.
3,994 results · Disclosures in 2026. Clear filters
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of NHS patient records stolen in cyber attack; disclosure delayed over six months after notification.
1 Jun 2026
Critical1 Jun 2026
Veradigm
Healthcare · Records not stated
Electronic health records company; customer data stolen after hackers infiltrated vendor's systems.
1 Jun 2026
Critical1 Jun 2026
Fortinet
Technology · Records not stated
Credentials from approximately 74,000 Fortinet firewalls and VPN gateways stolen in FortiBleed data leak.
1 Jun 2026
High1 Jun 2026
Australia Medicare
Government · Records not stated
OpenAI agent accessed non-public government Medicare portal files in June; notice delayed 3 months
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customer records, second major hack in over a year
1 Jun 2026
Critical1 Jun 2026
Qilin/Essex NHS Trust
Healthcare · 900,000 records
Ransomware attack resulted in stolen patient records; hospitals identifying and warning patients
1 Jun 2026
Critical1 Jun 2026
Coupang
Retail · 33,700,000 records
Data breach exposed 33.7 million accounts, resulting in record $409 million fine from South Korea.
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information and health records affecting multiple hospital facilities.
1 Jun 2026
Critical1 Jun 2026
Odido
Sector not stated · 6,500,000 records
ShinyHunters breach exposed 6.5 million customer records with €1M ransom demand
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customers, second major hack in over a year
1 Jun 2026
High1 Jun 2026
FirstClass Travel Agency
Sector not stated · Records not stated
Alleged data breach of customer records from Sydney-based travel agency
1 Jun 2026
Critical1 Jun 2026
Canada Life
Finance · 5,500,000 records
Threat actor claimed 5.5 million records for sale on underground forum
1 Jun 2026
High1 Jun 2026
University of Western Australia
Education · Records not stated
Accidental leak of student records; second breach in six months
1 Jun 2026
High1 Jun 2026
Huntsville Hospital
Healthcare · Records not stated
Patient health information compromised through third-party vendor data breach
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, breach disclosed over six months after notification
1 Jun 2026
Critical1 Jun 2026
Fortinet
Technology · Records not stated
74,000 firewall and VPN gateway credentials stolen from configuration files in FortiBleed data leak
1 Jun 2026
Critical1 Jun 2026
Elasticsearch Database
Technology · Records not stated
Publicly exposed database leaked 24 billion stolen credentials from infostealers and breach collections
1 Jun 2026
Critical1 Jun 2026
Charter Communications
Technology · 42,000,000 records
Data breach exposing 42M customer records after ShinyHunters extortion threat
1 Jun 2026
Critical1 Jun 2026
Tata Electronics
Technology · Records not stated
Data breach confirmed with 630GB stolen including Apple and Tesla supplier documents
1 Jun 2026
High1 Jun 2026
LastPass
Technology · Records not stated
Data breach at third-party vendor exposing customer data confirmed
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customers' personal information
1 Jun 2026
High1 Jun 2026
FirstClass
Retail · Records not stated
Sydney-based travel agency hit by alleged data breach with customer records leaked by threat actor
1 Jun 2026
Critical1 Jun 2026
Canada Life
Finance · 5,500,000 records
5.5 million records allegedly compromised and offered for sale on underground cybercrime forum
1 Jun 2026
High1 Jun 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Second data breach in six months; student records accidentally leaked
1 Jun 2026
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