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.
5,291
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.
3,968 results · Disclosures in 2026. Clear filters
High31 Jul 2026
FirstClass Travel Agency
Sector not stated · Records not stated
Australian travel agency breached; customer records compromised
31 Jul 2026
Critical31 Jul 2026
French Telecom Subsidiaries
Technology · Records not stated
Data breach with cybersecurity vulnerabilities; fined €42 million by French regulator
31 Jul 2026
High31 Jul 2026
PNC Bank
Finance · 740,000 records
740,000 records exposed due to improper security and safeguarding of personally identifiable information
31 Jul 2026
High31 Jul 2026
FinWise
Finance · 689,000 records
689,000 users' unencrypted data accessed by former employee
31 Jul 2026
Critical31 Jul 2026
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affected 3.2+ million patients, $14M settlement
31 Jul 2026
High31 Jul 2026
EY Vendor
Finance · Records not stated
Third-party vendor breach exposed tax client data after 15-day intrusion
31 Jul 2026
High31 Jul 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
Data security incident affecting personal information, $40M settlement reached
31 Jul 2026
Critical31 Jul 2026
Meta (Facebook)
Technology · Records not stated
2019 breach exposed hundreds of millions of Facebook passwords
31 Jul 2026
High31 Jul 2026
KT Corporation
Sector not stated · Records not stated
Telecommunications company customer data breach in South Korea, resulted in $39M fine
31 Jul 2026
Critical31 Jul 2026
MCBS
Healthcare · 1,260,000 records
Medical billing firm breach exposed sensitive healthcare data for 1.26 million people
31 Jul 2026
Critical31 Jul 2026
KT Corp
Technology · Records not stated
Data breach resulting in massive fine from South Korea's Personal Information Protection Commission
31 Jul 2026
High31 Jul 2026
Cell C
Technology · Records not stated
Data breach confirmed following 2024 cyberattack affecting major South African telecom provider
31 Jul 2026
High31 Jul 2026
Partnered Health
Healthcare · Records not stated
Australian healthcare provider breach exposed personal information and medical details across 21 clinics
31 Jul 2026
Critical31 Jul 2026
U.S. Government Agencies
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024 including White House-linked passwords
31 Jul 2026
Critical31 Jul 2026
Gaming Accounts
Technology · Records not stated
Over 11 million gaming account credentials exposed in 2024 data leaks discovered by Kaspersky DFI
31 Jul 2026
High31 Jul 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
Data breach requiring $40M settlement in class action lawsuit
31 Jul 2026
Critical31 Jul 2026
Meta/Facebook
Technology · Records not stated
2019 breach exposed hundreds of millions of Facebook passwords; fined $101.5M
31 Jul 2026
Critical31 Jul 2026
Meta (2018 breach)
Technology · Records not stated
2018 data breach resulted in €251 million fine from EU privacy regulator in December 2024
31 Jul 2026
High31 Jul 2026
Synnovis
Healthcare · 900,000 records
Thousands of NHS patient records stolen during ransomware attack affecting Mid South Essex Foundation Trust
31 Jul 2026
High31 Jul 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, disclosed over 6 months after notification
31 Jul 2026
Critical31 Jul 2026
Medical billing company (unnamed)
Healthcare · 1,300,000 records
2025 ransomware attack exposed protected health data on 1.3 million people to dark web
31 Jul 2026
Critical31 Jul 2026
Tribeca Film Festival
Sector not stated · 666,000 records
Unprotected database exposed 666,000 records including celebrity contact data with no password or encryption
31 Jul 2026
High31 Jul 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at hospital facilities
31 Jul 2026
High31 Jul 2026
Cencora
Retail · Records not stated
Data security incident affecting customers, $40M settlement reached
31 Jul 2026
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