Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker
Disclosures in 2026
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.
5,278
Disclosures in the tracker, all years
1,991
Of those, indexed in 2026
36
Added in October
13
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 13 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,944 results · Disclosures in 2026. Clear filters
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
Critical18 Sep 2026
Allianz Life
Finance · 1,500,000 records
1.5 million individuals impacted by data breach
18 Sep 2026
High18 Sep 2026
DocketWise
Legal · 143,000 records
143,000 individuals impacted by data breach
18 Sep 2026
Critical18 Sep 2026
Columbia University
Education · 860,000 records
860,000 individuals impacted by data breach
18 Sep 2026
Critical18 Sep 2026
McLaren Health Care
Healthcare · Records not stated
740,000+ records stolen in ransomware attack
18 Sep 2026
Critical18 Sep 2026
MGM
Sector not stated · Records not stated
2019 data breach affecting customers, $45M settlement paid
18 Sep 2026
High18 Sep 2026
Workday
Technology · Records not stated
Social engineering attack targeting CRM exposed customer data
18 Sep 2026
High18 Sep 2026
Union Bank and Trust
Finance · Records not stated
2023 MOVEit software exploit exposed customer data; $2.4M settlement
18 Sep 2026
Critical18 Sep 2026
Welltok
Healthcare · 14,760,000 records
14.76 million individuals affected by MOVEit Transfer data breach in 2023
18 Sep 2026
High18 Sep 2026
Mizuno
Retail · Records not stated
Data breach confirmed after 2024 ransomware attack affecting customer data
18 Sep 2026
Critical18 Sep 2026
Free Mobile
Technology · 24,000,000 records
2024 data breach affecting 24 million customers; fined €42 million by French regulator for security violations
18 Sep 2026
Critical18 Sep 2026
U.S. Federal Agencies
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including compromised White House credentials
18 Sep 2026
Critical18 Sep 2026
MCBS
Healthcare · 1,200,000 records
Atlanta-based medical business management company data breach affecting 1.2 million individuals
18 Sep 2026
High18 Sep 2026
Highland Oncology Group
Healthcare · Records not stated
2025 ransomware attack on Arkansas-based cancer care practice, litigation settled
18 Sep 2026
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