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
Yearslong data breach of residents' private health-related information
Government · Records not stated
Yearslong data breach of residents' private health-related information
31 Jul 2026
High31 Jul 2026
CommonSpirit Health
Healthcare · 19,027 records
19,027 patient records exposing personal and medical information
31 Jul 2026
High31 Jul 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen in ransomware attack
31 Jul 2026
High31 Jul 2026
EY (Ernst & Young)
Legal · Records not stated
Third-party vendor breach exposed sensitive tax client data after 81-day notification delay
31 Jul 2026
Critical31 Jul 2026
Spectrum (Charter Communications)
Technology · 42,000,000 records
Data breach exposed 4.9 million confirmed accounts with 42 million records claimed stolen
31 Jul 2026
Critical31 Jul 2026
ANTS (French ID Agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records with personal data linked to French identity documents
31 Jul 2026
High31 Jul 2026
U.S. Civil Service/White House
Government · Records not stated
Thousands of civil servants' passwords and White House-linked passwords exposed since early 2024
31 Jul 2026
Critical31 Jul 2026
TriZetto
Healthcare · 3,000,000 records
More than 3 million people impacted by breach of healthcare tech provider software affecting multiple counties
31 Jul 2026
Critical31 Jul 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records stolen in ransomware attack affecting healthcare services
31 Jul 2026
Critical31 Jul 2026
FinWise Bank
Finance · 689,000 records
Insider breach exposed data of 689,000 customers in 2024
31 Jul 2026
Medium31 Jul 2026
31 Jul 2026
Critical31 Jul 2026
LastPass
Technology · 1,600,000 records
2022 breach exposed 1.6 million users, resulted in ICO fine
31 Jul 2026
High31 Jul 2026
Synnovis NHS
Healthcare · 900,000 records
Thousands of patient records stolen during ransomware attack on Mid South Essex Foundation Trust
31 Jul 2026
High31 Jul 2026
Essex NHS
Healthcare · 900,000 records
Patient records stolen in cyber attack, disclosed over 6 months after notification
31 Jul 2026
High31 Jul 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information at multiple facilities
31 Jul 2026
Critical31 Jul 2026
PEAR ransomware attack
Healthcare · 1,260,000 records
PEAR ransomware attack exposed 1.26 million patient records from medical billing company
31 Jul 2026
High31 Jul 2026
Organisation not named
Retail · Records not stated
The disclosure as indexed does not name the organisation.
Data breach affecting customers with $40M settlement in class action
31 Jul 2026
High31 Jul 2026
Unauthorized access causing compromised information; breach response ongoing
Government · Records not stated
Unauthorized access causing compromised information; breach response ongoing
31 Jul 2026
High31 Jul 2026
Synnovis NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in major ransomware attack affecting Mid South Essex NHS
31 Jul 2026
Critical31 Jul 2026
ANTS (France ID Agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records from French identity agency
31 Jul 2026
Critical31 Jul 2026
Bankinter (EVO Banco)
Finance · 1,270,000 records
API vulnerability exposed financial and identity data of 1.27 million records in 2024
31 Jul 2026
Critical31 Jul 2026
MCBS
Healthcare · 1,200,000 records
Data breach affects 1.2 million individuals at Atlanta-based medical business management company
31 Jul 2026
Critical31 Jul 2026
Network breach
Healthcare · 1,260,000 records
Network breach exposed sensitive data affecting 1.26 million people at healthcare billing company
31 Jul 2026
Critical31 Jul 2026
Toppan
Technology · Records not stated
Supply chain breach exposing vulnerabilities affecting Singapore citizens, banks, and institutions
31 Jul 2026
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