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
36
Added in October
7
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.
3,944 results · Disclosures in 2026. Clear filters
Critical1 Mar 2026
IDMerit
Technology · Records not stated
Unprotected database exposed 1 billion identity records used by banks and identity verification
1 Mar 2026
High1 Mar 2026
CareCloud
Healthcare · Records not stated
Healthcare software firm informed SEC of potential patient data leak; electronic health records may have been leaked after system intrusion
1 Mar 2026
High1 Mar 2026
Companies House UK
Government · Records not stated
Data exposed during five-month security issue affecting UK firm records
1 Mar 2026
High1 Mar 2026
UK Companies House
Government · Records not stated
Data exposed during five-month security issue affecting all UK firms' records
1 Mar 2026
High1 Mar 2026
Foster City
Government · Records not stated
Ransomware attack forced city computer system offline; state of emergency declared
1 Mar 2026
High1 Mar 2026
University of Hawaiʻi Cancer Center
Education · Records not stated
Data leak following ransomware attack exposing Multiethnic Cohort Study data including driver's license and voter IDs
1 Mar 2026
Critical1 Mar 2026
PIH Health
Healthcare · 2,950,000 records
Healthcare provider notified 2.95 million patients of 2024 hacking incident/ransomware
1 Mar 2026
High1 Mar 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack led to data leak including driver's license numbers and voter information
1 Mar 2026
High1 Mar 2026
CISA (U.S. Department)
Government · Records not stated
US agency breached through Cisco vulnerability with FIRESTARTER backdoor malware
1 Mar 2026
High1 Mar 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack led to data leak including driver's license numbers and voter info
1 Mar 2026
Critical1 Mar 2026
Qantas
Sector not stated · 5,670,000 records
5.67 million customer records exposed via vishing attack tech support scam
1 Mar 2026
High1 Mar 2026
South Florida Injury Centers
Healthcare · 1,525 records
1,525 records breached exposing SSNs and medical records
1 Mar 2026
High1 Mar 2026
Ernst & Young (EY)
Finance · Records not stated
Third-party vendor breach exposed tax client data after 81-day notification delay
1 Mar 2026
High1 Mar 2026
Tribeca Festival
Sector not stated · 666,000 records
666,000 records exposed including celebrity contact information from unprotected database
1 Mar 2026
Critical1 Mar 2026
Charter Spectrum
Technology · 42,000,000 records
4.9M confirmed accounts breached; 42M records claimed stolen
1 Mar 2026
High1 Mar 2026
Intesa Sanpaolo SpA
Finance · Records not stated
Italian regulator fined $36 million for serious data protection and personal data security shortcomings
1 Mar 2026
Critical1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records from medical research project exposed online, data offered for sale
1 Mar 2026
High1 Mar 2026
FirstClass
Sector not stated · Records not stated
Australian travel agency hit by alleged data breach with customer records compromised
1 Mar 2026
High1 Mar 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information
1 Mar 2026
High1 Mar 2026
CommonSpirit Health
Healthcare · 19,027 records
Data breach exposing personal and medical information of 19,027 patient records via healthcare consulting company
1 Mar 2026
High1 Mar 2026
Companies House
Government · Records not stated
UK firm records exposed during five-month security issue affecting all registered companies
1 Mar 2026
Critical1 Mar 2026
LexisNexis
Legal · 400,000 records
Cloud systems breach exposed records of 400K users including federal judges and .gov accounts
1 Mar 2026
High1 Mar 2026
Ransomware attack
Education · Records not stated
Ransomware attack exposed data from Multiethnic Cohort Study including driver's license numbers and voter IDs
1 Mar 2026
High1 Mar 2026
Companies House (UK)
Government · Records not stated
Data exposed during five-month security issue affecting UK firm records
1 Mar 2026
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