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.
5,344
Disclosures in the tracker, all years
2,057
Of those, indexed in 2026
118
Added in October
15
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 26 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
High1 Jan 2026
Yearslong breach
Healthcare · Records not stated
Yearslong breach exposed residents' private health-related information
1 Jan 2026
High1 Jan 2026
Stack Sports
Technology · Records not stated
Data breach exposed payment details and bank account numbers of users; financial account information compromised
1 Jan 2026
Critical1 Jan 2026
Fortinet FortiGate
Technology · Records not stated
FortiBleed campaign exposed administrative and VPN credentials for 73,932 FortiGate firewalls
1 Jan 2026
High1 Jan 2026
Valve
Technology · Records not stated
Steam hardware customer data stolen via European logistics partner breach
1 Jan 2026
High1 Jan 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Years-long data breach of residents' private health-related information exposed
1 Jan 2026
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
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