Weekly briefing No. 41 published 4 Oct 2026
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.

5,306
Disclosures in the tracker, all years
2,020
Of those, indexed in 2026
69
Added in October
19
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 20 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.

3,996 results · Disclosures in 2026. Clear filters

High9 Jul 2026
One Medical Amazon
Healthcare · Records not stated
Archived senior care records breached via third-party storage
Our record
9 Jul 2026
Critical9 Jul 2026
KDDI Six ISPs
Technology · 14,200,000 records
14.2M email logins exposed via third-party flaw
Our record
9 Jul 2026
Critical9 Jul 2026
Cybernews Credential Dump
Technology · Records not stated
24B stolen credential records publicly exposed
Our record
9 Jul 2026
High9 Jul 2026
Canada House of Commons
Government · Records not stated
Employee PII stolen via SharePoint zero-day
Our record
9 Jul 2026
Critical9 Jul 2026
Anne Arundel Dermatology
Healthcare · 1,900,000 records
1.9M patient PHI records exfiltrated
Our record
9 Jul 2026
Critical9 Jul 2026
NYC Health Hospitals
Healthcare · 1,800,000 records
1.8M records with SSNs and biometrics stolen
Our record
9 Jul 2026
Critical9 Jul 2026
Instructure Canvas
Education · Records not stated
30M student and staff records stolen
Our record
9 Jul 2026
High9 Jul 2026
One Medical
Healthcare · Records not stated
Archived senior care patient records accessed
Our record
9 Jul 2026
Critical9 Jul 2026
Tchap French Government
Government · Records not stated
73K government accounts and 643K messages stolen
Our record
9 Jul 2026
High9 Jul 2026
Novo Nordisk
Healthcare · Records not stated
Drug research and patient trial data exfiltrated
Our record
9 Jul 2026
Critical9 Jul 2026
Instructure Canvas LMS
Education · Records not stated
275M student records stolen by ShinyHunters
Our record
9 Jul 2026
Critical9 Jul 2026
Threat intel platform
Government · Records not stated
Threat intel platform breached during World Cup ops
Our record
9 Jul 2026
Critical9 Jul 2026
Illinois Dept Human Services
Government · Records not stated
Hundreds of thousands of health records exposed publicly
Our record
9 Jul 2026
Critical9 Jul 2026
24B Credential Mega-Dump
Sector not stated · 24,000,000,000 records
24B stolen credentials exposed in 8.3TB public database
Our record
9 Jul 2026
Critical9 Jul 2026
KDDI Japan ISP Network
Technology · 14,200,000 records
14.2M email credentials exposed across six ISPs
Our record
9 Jul 2026
Critical9 Jul 2026
HSIN platform
Government · Records not stated
HSIN platform breached, national security data exposed
Our record
9 Jul 2026
High9 Jul 2026
Klue
Technology · Records not stated
OAuth tokens and Salesforce CRM data accessed
Our record
9 Jul 2026
Critical9 Jul 2026
Nissan Americas
Sector not stated · 53,000 records
Employee SSNs, banking, tax data stolen
Our record
9 Jul 2026
Critical9 Jul 2026
Infostealer Credential Megadump
Sector not stated · 24,000,000,000 records
24B credentials from 36 sources exposed
Our record
9 Jul 2026
Critical9 Jul 2026
June 2026 Stealer Logs
Technology · 124,000,000 records
56M unique emails and 124M passwords indexed on monitored breach databases
Our record
9 Jul 2026
High9 Jul 2026
Texas Parks and Wildlife
Government · Records not stated
3M hunting and fishing license records exposed
Our record
9 Jul 2026
High9 Jul 2026
Kodak Corporation
Sector not stated · 2,200,000 records
2.2M customer records stolen by ShinyHunters
Our record
9 Jul 2026
Critical9 Jul 2026
Madison Square Garden
Sector not stated · 26,000,000 records
26M records leaked after ransom deadline passed
Our record
9 Jul 2026
Critical9 Jul 2026
KDDI Japan Telecom
Technology · 14,200,000 records
14.2M email credentials exposed across six ISPs
Our record
9 Jul 2026
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