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.
5,345
Disclosures in the tracker, all years
2,058
Of those, indexed in 2026
119
Added in October
11
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 27 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
High6 Feb 2025
Hakko Corporation
Technology · 9,665 records
9,665 records exposed, Dates of birth, Email addresses, Genders, Names and 4 more
6 Feb 2025
Medium4 Feb 2025
PoinCampus
Education · 89,116 records
89,116 records exposed, Dates of birth, Email addresses, Names, Phone numbers
4 Feb 2025
High3 Feb 2025
DragonNest
Technology · 511,290 records
511,290 records exposed, Email addresses, IP addresses, Passwords, Usernames
3 Feb 2025
Critical3 Feb 2025
1win
Finance · 96,166,543 records
96,166,543 records exposed, Dates of birth, Email addresses, Geographic locations, IP addresses and 2 more
3 Feb 2025
High2 Feb 2025
9Lives
Technology · 109,515 records
109,515 records exposed, Email addresses, Passwords, Usernames
2 Feb 2025
High1 Feb 2025
Mizuno
Retail · Records not stated
Japanese sportswear company confirmed data breach following 2024 ransomware attack claims
1 Feb 2025
Critical1 Feb 2025
US Government
Government · Records not stated
Biggest breach of US government data underway
1 Feb 2025
High1 Feb 2025
Mizuno
Retail · Records not stated
Japanese sportswear company confirms data breach following 2024 ransomware attack
1 Feb 2025
High1 Feb 2025
Southern Water
Sector not stated · Records not stated
Ransomware attack resulting in £4.5 million cost and data exposure
1 Feb 2025
Critical1 Feb 2025
DISA Global Solutions
Sector not stated · 3,300,000 records
Data breach impacted more than 3.3 million people
1 Feb 2025
High1 Feb 2025
Baltimore City Public Schools
Education · Records not stated
Ransomware attack stole data from thousands of students, teachers, administrators
1 Feb 2025
High1 Feb 2025
Mizuno
Retail · Records not stated
Data breach confirmed after 2024 ransomware attack affecting customers
1 Feb 2025
Critical1 Feb 2025
Conduent
Sector not stated · 25,000,000 records
At least 25 million people had personal data stolen in cyberattack; printing, payment, and document services company
1 Feb 2025
High1 Feb 2025
Baltimore City Public Schools
Education · Records not stated
Thousands of students, teachers and administrators had information stolen during February ransomware attack
1 Feb 2025
High1 Feb 2025
FirstClass
Sector not stated · Records not stated
Customer records of Australian travel agency allegedly breached
1 Feb 2025
High1 Feb 2025
Mizuno
Retail · Records not stated
Ransomware attack exposed customer data after 2024 breach claims
1 Feb 2025
High28 Jan 2025
HeatGames
Technology · 647,896 records
647,896 records exposed, Email addresses, Geographic locations, IP addresses, Passwords
28 Jan 2025
Medium28 Jan 2025
28 Jan 2025
High27 Jan 2025
Frederick Health
Healthcare · 934,000 records
934K patient records exposed in ransomware attack
27 Jan 2025
Medium22 Jan 2025
Welhof
Retail · 107,292 records
107,292 records exposed, Email addresses, Names, Physical addresses, Purchases
22 Jan 2025
Medium22 Jan 2025
Frame & Optic
Government · 15,678 records
15,678 records exposed, Email addresses, Geographic locations, Names, Phone numbers
22 Jan 2025
Medium18 Jan 2025
Otelier
Finance · 436,855 records
436,855 records exposed, Email addresses, Names, Partial credit card data, Phone numbers and 3 more
18 Jan 2025
Medium17 Jan 2025
MSI
Government · 249,990 records
249,990 records exposed, Email addresses, Names, Phone numbers, Physical addresses and 1 more
17 Jan 2025
High16 Jan 2025
Le Coq Sportif Columbia
Technology · 79,712 records
79,712 records exposed, Dates of birth, Device information, Email addresses, Genders and 5 more
16 Jan 2025
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