Intelligence · Disclosure tracker
Every public disclosure, dated and sourced.
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.
5,439
Disclosures in the tracker, all years
2,154
Of those, indexed in 2026
87
Added in November
27
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 11 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
Worldwide · How they got in
Incidents worldwide, by country.
79 incidents from 9 countries in the last 90 days, each from a public source and reviewed before it is shown. Where the source says how the attackers got in, the row says so.
- Belgium29 Oct 2026FOD Financiën (Belgian federal finance and tax agency)The source does not say how they got in.The Register
Critical1 Jan 2026
MCBS
Healthcare · 1,260,000 records
1.26 million patients exposed in PEAR ransomware attack on medical billing system
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 with China-linked malware via USB drives, undetected for nearly a year
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 700,000 state residents
1 Jan 2026
High1 Jan 2026
LexisNexis
Legal · Records not stated
Suspicious server activity led to shutdown of Diligence, Metabase API, and Newsdesk services
1 Jan 2026
High1 Jan 2026
Years-long data breach exposing residents' private health-related information
Government · Records not stated
Years-long data breach exposing residents' private health-related information
1 Jan 2026
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
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