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.
5,292
Disclosures in the tracker, all years
2,005
Of those, indexed in 2026
50
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 Oct 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.
64 incidents from 11 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.
- Denmark3 Oct 2026Technical University of DenmarkHow they got in: stolen or reused passwords.BleepingComputer
Critical15 Sep 2026
ApolloMD
Healthcare · 626,000 records
Data breach impacted 626,000 individuals
15 Sep 2026
Critical15 Sep 2026
Blue Shield of California
Healthcare · 4,700,000 records
Data breach impacted 4.7 million people
15 Sep 2026
Critical15 Sep 2026
Columbia University
Education · 860,000 records
Data breach impacted 860,000 individuals
15 Sep 2026
High15 Sep 2026
7-Eleven
Retail · 185,000 records
Data breach affected over 185,000 people's personal and payment information
15 Sep 2026
High15 Sep 2026
Covenant Health
Healthcare · 480,000 records
Data breach impacted nearly 480,000 patients' medical and personal information
15 Sep 2026
High15 Sep 2026
University of Hawaiʻi Cancer Center
Healthcare · Records not stated
Data leak following ransomware attack exposed patient medical records
15 Sep 2026
Critical15 Sep 2026
700Credit
Finance · 10,000,000 records
Data breach affecting approximately 10 million people in credit reporting data theft
15 Sep 2026
Critical15 Sep 2026
Prosper
Finance · 10,000,000 records
Data breach affecting approximately 10 million people's financial and personal information
15 Sep 2026
High15 Sep 2026
Krispy Kreme
Retail · 160,000 records
Over 160,000 people had data stolen during cyber attack in 2024
15 Sep 2026
High15 Sep 2026
Kaplan
Education · Records not stated
Education company reported data breach impacting student and staff records
15 Sep 2026
Critical15 Sep 2026
Yale New Haven Health
Healthcare · 5,500,000 records
Data breach affected 5.5 million patients' medical and personal information
15 Sep 2026
Critical15 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacted 3.8 million people's personal information
15 Sep 2026
High15 Sep 2026
PayPal
Finance · Records not stated
Data breach exposed user personal information for 6 months
15 Sep 2026
High15 Sep 2026
Cox Enterprises
Technology · Records not stated
Data breach via Oracle E-Business Suite exposed employee and customer data
15 Sep 2026
High15 Sep 2026
Sax
Legal · 220,000 records
Top US accounting firm disclosed 2024 data breach impacting 220,000 individuals
15 Sep 2026
High15 Sep 2026
Cell C
Technology · Records not stated
Data breach following cyberattack at South African telecom provider
15 Sep 2026
High15 Sep 2026
TransUnion
Finance · 37,000 records
2019 breach exposed credit and personal data of 37,000 people
15 Sep 2026
Critical15 Sep 2026
Optus
Technology · Records not stated
2022 cyber breach with privacy regulator lawsuit filed for privacy law violations
15 Sep 2026
Critical15 Sep 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack exposing 788,000 financial records affecting 74+ US banks and credit unions
15 Sep 2026
Critical15 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach exposing over 100 million customers across two separate incidents in 2024
15 Sep 2026
High15 Sep 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of civil servants' passwords exposed since early 2024, including White House-linked credentials
15 Sep 2026
Critical15 Sep 2026
MCBS
Healthcare · 1,200,000 records
Data breach affected 1.2 million individuals' medical business information
15 Sep 2026
High15 Sep 2026
Paylogix
Finance · Records not stated
Akira ransomware gang stole health, financial, and identity data from tens of thousands
15 Sep 2026
Critical15 Sep 2026
Medical Billing Company
Healthcare · 1,300,000 records
Ransomware attack exposed 1.3 million individuals' protected health data
15 Sep 2026
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