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
Aflac Japan
Finance · 1,300,000 records
Policy details and bank accounts stolen
Our record
9 Jul 2026
Critical9 Jul 2026
Nissan Americas
Sector not stated · 53,000 records
Employee SSNs stolen via Oracle PeopleSoft zero-day
Our record
9 Jul 2026
Medium9 Jul 2026
Oxford CareerConnect
Education · Records not stated
Student PII exposed via career platform breach
Our record
9 Jul 2026
Critical9 Jul 2026
NYC Health and Hospitals
Healthcare · 1,800,000 records
1.8M records stolen including biometrics and SSNs
Our record
9 Jul 2026
Critical9 Jul 2026
Medtronic
Healthcare · 3,800,000 records
3.8M patient SSNs and health records stolen
Our record
9 Jul 2026
Critical9 Jul 2026
Charter Communications
Technology · 40,000,000 records
40M records stolen via vishing attack
Our record
9 Jul 2026
Critical9 Jul 2026
KDDI Japan Telco
Technology · 14,200,000 records
14.2M email addresses and passwords leaked
Our record
9 Jul 2026
High9 Jul 2026
Lake Region Healthcare
Healthcare · Records not stated
SSNs, biometrics and medical records confirmed stolen
Our record
9 Jul 2026
Critical9 Jul 2026
ADT
Sector not stated · 30,000 records
5.5M customer records leaked after April intrusion
Our record
9 Jul 2026
Critical9 Jul 2026
AdaptHealth Corp
Healthcare · Records not stated
Patient PHI and billing credentials stolen via contractor
Our record
9 Jul 2026
Critical9 Jul 2026
Intel-sharing platform
Government · Records not stated
Intel-sharing platform breached during live World Cup ops
Our record
9 Jul 2026
High9 Jul 2026
Kubota North America
Sector not stated · 14,500 records
SSNs and bank data stolen in month-long intrusion
Our record
9 Jul 2026
Critical9 Jul 2026
DHS HSIN Platform
Government · Records not stated
Federal intel-sharing network contents accessed
Our record
9 Jul 2026
High9 Jul 2026
Kubota North America
Sector not stated · 14,500 records
Employee SSNs, banking, benefits data stolen
Our record
9 Jul 2026
Medium9 Jul 2026
Oxford University CareerConnect
Education · Records not stated
Student PII exposed via career platform breach
Our record
9 Jul 2026
High9 Jul 2026
Tchap French Gov Messaging
Government · Records not stated
73K government user accounts and 643K messages stolen
Our record
9 Jul 2026
High9 Jul 2026
London Hydro
Sector not stated · 170,000 records
170K customer account and billing records accessed
Our record
9 Jul 2026
Critical9 Jul 2026
DentaQuest
Healthcare · Records not stated
2.6M Medicaid health records leaked by ShinyHunters
Our record
9 Jul 2026
Critical9 Jul 2026
Aflac Life Insurance Japan
Finance · 4,380,000 records
4.38M customer records stolen including bank details
Our record
9 Jul 2026
Medium9 Jul 2026
Chisholm Persson Ball
Legal · Records not stated
Akira ransomware hit US law firm
Our record
9 Jul 2026
High9 Jul 2026
Eastman Kodak
Sector not stated · 2,200,000 records
2.2M customer records stolen by ShinyHunters
Our record
9 Jul 2026
Critical9 Jul 2026
Nissan Motor
Sector not stated · 53,000 records
Employee SSNs and bank data stolen via Oracle zero-day
Our record
9 Jul 2026
Critical9 Jul 2026
KDDI Japan
Technology · 14,200,000 records
14.2M email credentials exposed at six ISPs
Our record
9 Jul 2026
Critical9 Jul 2026
Charter Communications
Technology · 4,900,000 records
4.9M customer accounts breached
Our record
9 Jul 2026
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