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
High17 Sep 2026
Dartmouth College
Education · Records not stated
Data breach following Clop extortion attack
17 Sep 2026
Critical17 Sep 2026
Coupang
Retail · 33,700,000 records
33.7M customers' data exposed; South Korea fined company $409M
17 Sep 2026
High17 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach with $177 million settlement; customers eligible for up to $7,500 compensation
17 Sep 2026
Critical17 Sep 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
South African government healthcare lab network impacted by ransomware attack affecting laboratory services
17 Sep 2026
High17 Sep 2026
Cell C
Technology · Records not stated
South African telecom provider suffered data breach following 2024 cyberattack, exposing customer data
17 Sep 2026
Critical17 Sep 2026
Free Mobile
Technology · 24,000,000 records
24 million customer breach in 2024; fined €42 million for lack of basic security controls
17 Sep 2026
High17 Sep 2026
CommonSpirit Health
Healthcare · 19,027 records
Data breach exposed medical and personal data of 19,027 individuals
17 Sep 2026
Critical17 Sep 2026
McLaren Health Care
Healthcare · 3,200,000 records
Ransomware attacks in 2023 and 2024 exposed 3.2 million patient records
17 Sep 2026
High17 Sep 2026
Veradigm
Healthcare · Records not stated
Electronic health record company suffered vendor breach exposing customer data
17 Sep 2026
Critical17 Sep 2026
MCBS
Healthcare · 1,200,000 records
Medical business management company breach exposed 1.2 million individuals' personal data
17 Sep 2026
Critical17 Sep 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
PHI of 3.4M individuals exposed via unauthorized IT environment access
17 Sep 2026
Critical17 Sep 2026
Bankinter/EVO Banco
Finance · 1,270,000 records
1.27M records with financial and identity data exposed via API vulnerability
17 Sep 2026
Critical17 Sep 2026
Revolut Data Breach
Government · Records not stated
Revolut allegedly fed customer information to hackers impersonating an Italian government agency for five months.
The post Revolut Data Breach: 5 Months, 680 High-Profile Accounts, $3M Ransom appeared first on…
17 Sep 2026
Critical16 Sep 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Mike Stimpson reports: Some patient services may be affected as the general hospital in Nipigon responds to what it describes as a “cyber security incident.” An incident involving ransomware affected information…
16 Sep 2026
Medium16 Sep 2026
International Meteor Organization
Sector not stated · Records not stated
A website used around the world for reporting meteors faces weeks of downtime as the organization moves away from systems that were hacked recently.
16 Sep 2026
High16 Sep 2026
City of Helsinki
Government · Records not stated
Data breach affecting Helsinki residents and services
16 Sep 2026
High16 Sep 2026
Woodfords Family Services
Healthcare · Records not stated
Ransomware attack exposing patient and family data
16 Sep 2026
Critical16 Sep 2026
DISA Global Solutions
Sector not stated · 3,300,000 records
2024 data breach affected more than 3.3 million people
16 Sep 2026
Critical16 Sep 2026
Free Mobile and Free
Technology · Records not stated
Major data theft; fined €49 million in France
16 Sep 2026
High16 Sep 2026
Dell
Technology · Records not stated
Sensitive user data exposed in data breach
16 Sep 2026
High16 Sep 2026
Stiiizy
Retail · Records not stated
Data breach at cannabis retailer impacts 380,000
16 Sep 2026
Critical16 Sep 2026
Allianz Life
Finance · 1,500,000 records
Data breach impacted 1.5 million individuals
16 Sep 2026
High16 Sep 2026
Pierce County Library
Government · 340,000 records
Data breach impacts 340,000 individuals
16 Sep 2026
Medium16 Sep 2026
Nikkei
Technology · Records not stated
17,000 impacted by data breach from Slack account hack
16 Sep 2026
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