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.
5,291
Disclosures in the tracker, all years
2,004
Of those, indexed in 2026
49
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 17 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.
- Japan16 Oct 2026Burger King JapanThe source does not say how they got in.Security Affairs
- Japan16 Oct 2026BK JapanThe source does not say how they got in.SecurityWeek
- Japan16 Oct 2026Al Jazeera Media NetworkHow they got in: a supplier or vendor that was compromised first.BleepingComputer
- Japan14 Oct 2026Healthcare and financial organisations globallyHow they got in: email made to look like it came from a trusted sender.The Hacker News
- Japan8 Oct 2026Park24The source does not say how they got in.The Hacker News
- Japan7 Oct 2026AdvantestThe source does not say how they got in.SecurityWeek
Critical21 Sep 2026
Ticketmaster via Snowflake
Technology · 560,000,000 records
Massive 2024 cyberattack campaign affecting at least 100 million people across 165 companies including Ticketmaster
21 Sep 2026
High21 Sep 2026
Cell C
Technology · Records not stated
South African telecom provider confirmed data breach following 2024 cyberattack
21 Sep 2026
Critical21 Sep 2026
Ransomware attack
Healthcare · 1,200,000 records
Ransomware attack exposed personal data of 1.2 million individuals
21 Sep 2026
Critical21 Sep 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack exposed 788,000 financial records including names, addresses, card numbers
21 Sep 2026
Critical21 Sep 2026
AT&T
Technology · 109,000,000 records
Two separate incidents exposed data from over 100 million customers in 2024
21 Sep 2026
High21 Sep 2026
Essex NHS Trust
Healthcare · 900,000 records
NHS trust breach: thousands of patient records stolen in cyber attack, disclosed 6+ months after notification
21 Sep 2026
Critical21 Sep 2026
Veradigm
Healthcare · Records not stated
Electronic health records company: hackers infiltrated vendor systems and stole customer health data
21 Sep 2026
High21 Sep 2026
Home Depot
Retail · Records not stated
Leaked private GitHub token gave unauthorized access to internal systems for over a year
21 Sep 2026
High21 Sep 2026
US Government
Government · 53,070 records
53,070 passwords associated with U.S. government email domains exposed in public sources since 2024
21 Sep 2026
High21 Sep 2026
Paylogix
Technology · Records not stated
Employee benefits platform: hackers stole financial and health data from tens of thousands via Akira ransomware
21 Sep 2026
Critical21 Sep 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company breach exposed personal data of 1.2 million individuals
21 Sep 2026
Critical21 Sep 2026
Bankinter/EVO Banco
Finance · 1,270,000 records
API vulnerability exposed financial and identity data of 1.27 million people in Spain
21 Sep 2026
High21 Sep 2026
Burger King Russia
Finance · 3,155,792 records
3,155,792 records exposed, Dates of birth, Email addresses, Genders, Geographic locations and 2 more
21 Sep 2026
High21 Sep 2026
Cyberattack
Finance · Records not stated
The university, commonly known as LMU Munich, said Saturday that an attacker accessed enrollment data stored on one of its IT systems.
21 Sep 2026
Critical19 Sep 2026
ShinyHunters hacks Clop
Sector not stated · Records not stated
Lawrence Abrams reports: The ShinyHunters extortion gang breached the Clop (aka Cl0p) ransomware operation’s data leak site, defacing the Tor site and allegedly stealing server data and the private keys for its…
19 Sep 2026
Critical19 Sep 2026
ShinyHunters hacks Clop
Sector not stated · Records not stated
The ShinyHunters extortion gang breached the Clop (aka Cl0p) ransomware operation's data leak site, defacing the Tor site and allegedly stealing server data and the private keys for its onion service.
19 Sep 2026
Medium19 Sep 2026
The mistaken cc
Sector not stated · Records not stated
The mistaken cc: breach still happens. Ann Neo reports: An invitation to an event sent by the National Cancer Centre Singapore (NCCS) has sparked privacy concerns after a mailing list exposed the identities, contact…
19 Sep 2026
High18 Sep 2026
DraftKings
Technology · Records not stated
Hacking incident exposing user account data
18 Sep 2026
High18 Sep 2026
KT
Technology · Records not stated
Data breach via illegal base stations exposing customer information
18 Sep 2026
High18 Sep 2026
PowerSchool
Education · Records not stated
Breach of educational platform exposing student and school data
18 Sep 2026
High18 Sep 2026
City of Helsinki
Government · Records not stated
Data breach affecting municipal systems and resident information
18 Sep 2026
High18 Sep 2026
Deutsche Bank
Finance · Records not stated
Data breach confirmed via ransomware attack
18 Sep 2026
Critical18 Sep 2026
Free Mobile and Free
Technology · Records not stated
Major data theft in France, $49M fine issued
18 Sep 2026
Critical18 Sep 2026
ApolloMD
Healthcare · 626,000 records
626,000 individuals impacted by data breach
18 Sep 2026
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