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.
5,292
Disclosures in the tracker, all years
2,005
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
Critical1 Aug 2026
Healthcare billing company breach
Healthcare · 1,260,000 records
Healthcare billing company breach exposed sensitive data affecting 1.26 million people
1 Aug 2026
High1 Aug 2026
Synnovis/Mid South Essex NHS
Healthcare · 900,000 records
Major ransomware attack stole thousands of NHS patient records from Essex healthcare trust
1 Aug 2026
High1 Aug 2026
Ericsson
Technology · 15,661 records
Voice phishing attack exposed data of 15,661 people including SSNs and medical records
1 Aug 2026
High1 Aug 2026
EY Global Advisory
Finance · Records not stated
Personal records acquired in unauthorized access
1 Aug 2026
Critical1 Aug 2026
KDDI Telco Group
Technology · 12,000,000 records
12M email credentials exposed across six ISPs
1 Aug 2026
Critical1 Aug 2026
30M patient records stolen including 1M SSNs
Healthcare · 30,000,000 records
30M patient records stolen including 1M SSNs
1 Aug 2026
High1 Aug 2026
Synnovis/Essex NHS
Healthcare · 900,000 records
Ransomware attack stole thousands of patient records held by NHS trust in Essex; disclosed over 6 months after notification
1 Aug 2026
High1 Aug 2026
U.S. Civil Service Agencies
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including White House linked credentials
1 Aug 2026
High1 Aug 2026
Multiple Gaming Platforms
Technology · Records not stated
Over 11 million gaming account credentials exposed in 2024 data leaks
1 Aug 2026
Critical1 Aug 2026
US Homeland Security
Government · Records not stated
HSIN government network breached during World Cup
1 Aug 2026
High1 Aug 2026
Cherry Creek School District
Education · Records not stated
Student data breached; district notified families and facing lawsuit
1 Aug 2026
High1 Aug 2026
Personal information
Retail · Records not stated
Personal information exposed in data security incident; $40M settlement reached
1 Aug 2026
High1 Aug 2026
KT Corporation
Technology · Records not stated
Customer data breach affecting multiple individuals in South Korea telecommunications
1 Aug 2026
Critical1 Aug 2026
1 Aug 2026
Critical1 Aug 2026
MCBS
Healthcare · 1,200,000 records
Atlanta-based medical business management company data breach affected 1.2 million individuals
1 Aug 2026
High1 Aug 2026
Illuminate Education
Education · Records not stated
Data breach at Wisconsin-based edtech company resulted in FTC settlement and data deletion agreement
1 Aug 2026
High1 Aug 2026
Unnamed Law Firm
Legal · 13,000 records
Cyberattack on law firm exposed hospital records for approximately 13,000 patients in New Jersey
1 Aug 2026
High1 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen during major ransomware attack disrupting healthcare services
1 Aug 2026
High1 Aug 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack; disclosure delayed over 6 months
1 Aug 2026
Critical1 Aug 2026
U.S. Civil Service/White House
Government · Records not stated
Thousands of civil servants' passwords exposed, including White House-linked accounts
1 Aug 2026
High1 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach disclosed affecting approximately 170,000 individuals
1 Aug 2026
Critical1 Aug 2026
Fairlife (Coca-Cola subsidiary)
Retail · Records not stated
Ransomware attack by Anubis leaked 1 TB of stolen data after ransom demand refused
1 Aug 2026
High1 Aug 2026
Legend Senior Care
Healthcare · Records not stated
Ransomware attack disclosed; affected senior care provider data
1 Aug 2026
High1 Aug 2026
Windward Life Care
Healthcare · Records not stated
Ransomware attack disclosed; affected senior care provider data
1 Aug 2026
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