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.
5,301
Disclosures in the tracker, all years
2,016
Of those, indexed in 2026
67
Added in October
19
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 19 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,994 results · Disclosures in 2026. Clear filters
Critical1 Jul 2026
CareCloud
Healthcare · 350,000 records
Healthcare IT company data breach exposed information of over 350,000 people
1 Jul 2026
Medium1 Jul 2026
Aflac Japan has
Finance · 1,300,000 records
Aflac Japan has notified regulators that policy details and personal and banking information have been compromised
1 Jul 2026
Medium30 Jun 2026
Nissan
Sector not stated · Records not stated
Nissan says employees' data was stolen via the Oracle PeopleSoft zero-day campaign
30 Jun 2026
Medium29 Jun 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Nation-state attackers breach water systems through weak passwords, exposed PLCs, and poor segmentation, not sophisticated malware.
29 Jun 2026
High28 Jun 2026
Sysco
Retail · 2,691,852 records
2,691,852 records exposed, Customer feedback, Email addresses, Employers, Job titles and 4 more
28 Jun 2026
High26 Jun 2026
Organisation not named
Finance · Records not stated
The disclosure as indexed does not name the organisation.
The UK Cyber Monitoring Centre reviews the Canvas breach affecting 160 UK universities, highlighting data theft risks and financial impacts of cyber incidents
26 Jun 2026
Medium26 Jun 2026
American Tower
Technology · 216,601 records
216,601 records exposed, Email addresses, Job titles, Names, Phone numbers and 1 more
26 Jun 2026
Medium24 Jun 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Customers of the affected Japanese email services are “strongly advised” to change their email passwords
24 Jun 2026
High24 Jun 2026
Madison Square Garden Sports
Technology · 9,796,738 records
9,796,738 records exposed, Customer service records, Email addresses, Names, Phone numbers and 1 more
24 Jun 2026
Medium23 Jun 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Two men pleaded guilty in the United Kingdom this week to criminal charges stemming from an August 2024 cyberattack that crippled Transport for London, the entity responsible for the public transport network in the…
23 Jun 2026
Medium20 Jun 2026
JCPenney
Education · 368,418 records
368,418 records exposed, Dates of birth, Email addresses, Government issued IDs, Job titles and 4 more
20 Jun 2026
Medium18 Jun 2026
Ralph Lauren
Retail · 139,903 records
139,903 records exposed, Age groups, Email addresses, Genders, Names and 1 more
18 Jun 2026
Medium18 Jun 2026
CFGI
Finance · 248,235 records
248,235 records exposed, Email addresses, Employers, Job titles, Names and 2 more
18 Jun 2026
Critical15 Jun 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
How the Anubis ransomware group stole and leaked an Italian Adriatic port authority's data
15 Jun 2026
Medium15 Jun 2026
Infinite Campus
Education · 137,123 records
137,123 records exposed, Email addresses, Employers, Job titles, Names and 4 more
15 Jun 2026
Medium15 Jun 2026
Berkadia
Government · 305,216 records
305,216 records exposed, Email addresses, Employers, Names, Phone numbers and 1 more
15 Jun 2026
Critical11 Jun 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Extortion-only attacks are increasing as data theft drives most ransomware claims, with many organizations unable to stop stolen data from being exposed
11 Jun 2026
High10 Jun 2026
University of Nottingham
Finance · 454,635 records
454,635 records exposed, Academic records, Citizenship statuses, Dates of birth, Disabilities and 11 more
10 Jun 2026
Medium7 Jun 2026
Baker Distributing
Retail · 102,935 records
102,935 records exposed, Email addresses, Names, Phone numbers, Physical addresses and 1 more
7 Jun 2026
Medium5 Jun 2026
BCD Travel
Retail · 396,313 records
396,313 records exposed, Email addresses, Employers, Job titles, Names and 3 more
5 Jun 2026
High3 Jun 2026
DentaQuest
Healthcare · 2,553,599 records
2,553,599 records exposed, Dates of birth, Email addresses, Genders, Government issued IDs and 4 more
3 Jun 2026
High1 Jun 2026
iRhythm
Healthcare · Records not stated
Wearable cardiac monitoring company (Zio ECG) notifying individuals affected by a June 2026 hacking incident involving personal and health information.
1 Jun 2026
Critical1 Jun 2026
Fortinet
Technology · Records not stated
FortiBleed: Over 73,932 FortiGate systems exposed with valid administrative and VPN credentials leaked
1 Jun 2026
High1 Jun 2026
LastPass
Technology · Records not stated
Security breach at third-party vendor exposed customer data belonging to LastPass
1 Jun 2026
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