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.
5,276
Disclosures in the tracker, all years
1,989
Of those, indexed in 2026
34
Added in October
11
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 13 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,942 results · Disclosures in 2026. Clear filters
Critical1 Jan 2026
IEH Corporation
Government · Records not stated
Microsoft 365 phishing breach exposed mailbox and possibly export-controlled military technology details
1 Jan 2026
High1 Jan 2026
Booz Allen
Technology · Records not stated
Tax records breach at consulting firm; Treasury cuts ties
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Inadvertent exposure of personal information of 700,000 state residents
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Inadvertent exposure of personal data belonging to 700,000 state residents
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Inadvertent exposure of personal data for 700,000 state residents
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Inadvertent exposure of personal information for over 700,000 state residents
1 Jan 2026
Critical1 Jan 2026
Canada Life
Finance · 5,500,000 records
Threat actor claims 5.5 million customer, employee, and corporate records exposed for sale
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Inadvertent exposure of personal information belonging to over 700,000 state residents
1 Jan 2026
High1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Cyberattacks on operational technology across water systems in South Dakota, Georgia and 10 other states
1 Jan 2026
High1 Jan 2026
North Carolina Ports Authority
Sector not stated · Records not stated
Port of Wilmington cyberattack disrupted IT systems and operations
1 Jan 2026
Critical1 Jan 2026
Unlimited Technology Systems
Healthcare · 3,800,000 records
3.8 million people impacted by data breach at healthcare software company
1 Jan 2026
High1 Jan 2026
Exact Sciences/Abbott
Healthcare · Records not stated
Sensitive personal health information exposed from at-home diagnostic tests
1 Jan 2026
High1 Jan 2026
Law firm (New Jersey)
Legal · 13,000 records
Cyberattack exposed hospital records and personal data of approximately 13,000 patients
1 Jan 2026
Critical1 Jan 2026
MCBS Medical
Healthcare · 1,260,000 records
1.26 million patients exposed in PEAR ransomware attack on medical billing/practice-management system
1 Jan 2026
Critical1 Jan 2026
Instructure Canvas
Education · Records not stated
Supply chain breach generating 58% of all breach notices in 2026
1 Jan 2026
Critical1 Jan 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Classified networks compromised via China-made malware USB drives; breach undetected for nearly a year
1 Jan 2026
High1 Jan 2026
TrueConf
Technology · Records not stated
Client installers compromised with backdoors after server breach by Head Mare group
1 Jan 2026
High1 Jan 2026
Unnamed Law Firm
Legal · 13,000 records
Law firm breach exposed hospital patient records for approximately 13,000 patients in New Jersey
1 Jan 2026
High1 Jan 2026
Oregon DEQ
Government · Records not stated
Department of Environmental Quality leaked thousands of people's personal information
1 Jan 2026
Critical1 Jan 2026
Coldcard
Technology · Records not stated
Hardware wallet data breach resulting in theft of over $100M worth of bitcoin
1 Jan 2026
High1 Jan 2026
Organisation not named
Finance · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack stole data; hackers confirmed deletion of stolen information
1 Jan 2026
High1 Jan 2026
Framework
Technology · Records not stated
Hackers stole customer names and personal information from computer maker
1 Jan 2026
High1 Jan 2026
Multi-year data breach of residents' health-related information
Government · Records not stated
Multi-year data breach of residents' health-related information
1 Jan 2026
High1 Jan 2026
Uzbekistan Government Agencies
Government · 60,000 records
Cyberattack on government agencies exposing 60,000 records
1 Jan 2026
Were you affected?