Weekly briefing No. 41 published 4 Oct 2026
Intelligence · Disclosure tracker

Every public disclosure, dated and sourced.

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.

5,339
Disclosures in the tracker, all years
2,052
Of those, indexed in 2026
111
Added in October
18
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 25 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.

Worldwide · How they got in

Incidents worldwide, by country.

74 incidents from 11 countries in the last 90 days, each from a public source and reviewed before it is shown. Where the source says how the attackers got in, the row says so.

  1. Japan22 Oct 2026CapcomThe source does not say how they got in.BleepingComputer
  2. Japan19 Oct 2026Nikkei Inc.How they got in: stolen or reused passwords.BleepingComputer
  3. Japan16 Oct 2026Burger King JapanThe source does not say how they got in.Security Affairs
  4. Japan16 Oct 2026BK JapanThe source does not say how they got in.SecurityWeek
  5. Japan16 Oct 2026Al Jazeera Media NetworkHow they got in: a supplier or vendor that was compromised first.BleepingComputer
High1 Jun 2026
Valve
Technology · Records not stated
European logistics partner hit with data breach, customers warned of scam emails
1 Jun 2026
Critical1 Jun 2026
Thailand Digital Ministry
Government · Records not stated
221 million login records exposed, prompting MFA mandate for state systems
1 Jun 2026
High1 Jun 2026
Law firm (New Jersey)
Legal · 13,000 records
Data from 13,000 patients exposed via cyberattack on law firm representing hospitals
1 Jun 2026
Critical1 Jun 2026
Elasticsearch Database (Infostealer logs)
Technology · Records not stated
Publicly exposed database leaked 24 billion stolen credentials in June 2026, largest infostealer compilation
1 Jun 2026
Critical1 Jun 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26M patient records exposed in PEAR ransomware attack; medical billing data compromised
1 Jun 2026
Critical1 Jun 2026
MCBS Medical Billing
Healthcare · 1,260,000 records
1.26 million patients exposed in PEAR ransomware attack on medical billing company
1 Jun 2026
Critical1 Jun 2026
Instructure
Education · Records not stated
Canvas platform supply chain breach generating over 50% of all breach notices in 2026
1 Jun 2026
High1 Jun 2026
Law Firm (New Jersey)
Legal · 13,000 records
Cyberattack on law firm exposed hospital records of nearly 13,000 patients
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Thousands of NHS patient records confirmed stolen in major ransomware attack disrupting healthcare services
1 Jun 2026
Critical1 Jun 2026
Elasticsearch (public database)
Sector not stated · Records not stated
24 billion stolen credentials leaked in publicly exposed database, largest infostealer log compilation
1 Jun 2026
High1 Jun 2026
SISVISA
Healthcare · Records not stated
102,215 Brazilian health surveillance records leaked including IDs and tax data
1 Jun 2026
High1 Jun 2026
Personal and medical information including SSNs
Healthcare · Records not stated
Personal and medical information including SSNs exposed in data breach
1 Jun 2026
High1 Jun 2026
T-Mobile
Technology · Records not stated
Data breach exposed customer information; company violated WA notification law with text message notices
1 Jun 2026
Critical1 Jun 2026
Exact Sciences / Abbott
Healthcare · Records not stated
Patient data exposed through at-home diagnostic tests; sensitive and confidential personal information compromised
1 Jun 2026
High1 Jun 2026
Law firm representing hospitals
Legal · 13,000 records
Cyberattack exposed hospital records of nearly 13,000 patients in New Jersey
1 Jun 2026
High1 Jun 2026
Tribeca Festival
Sector not stated · Records not stated
Hundreds of thousands of records and celebrity contact information exposed in data leak
1 Jun 2026
High1 Jun 2026
Allstate
Finance · Records not stated
Employee-related records exposed in data breach
1 Jun 2026
Critical1 Jun 2026
Synnovis/NHS Essex
Healthcare · 900,000 records
Thousands of NHS patient records stolen in ransomware attack affecting Essex NHS trust
1 Jun 2026
High1 Jun 2026
Suno
Technology · Records not stated
Customer records and AI model training data exposed; customers not notified
1 Jun 2026
High1 Jun 2026
Canvas (Learning Management Platform)
Education · Records not stated
Learning platform attacked by ShinyHunters hacker group, security breach disclosed
1 Jun 2026
High1 Jun 2026
Coca-Cola Fairlife
Retail · Records not stated
Ransomware attack shut down $4 billion dairy brand operations
1 Jun 2026
High1 Jun 2026
FirstClass (travel agency)
Sector not stated · Records not stated
Customer records breached by threat actor operating on underground hacking forums
1 Jun 2026
High1 Jun 2026
Organisation not named
Healthcare · 900,000 records
The disclosure as indexed does not name the organisation.
Ransomware attack stole thousands of NHS patient records from Mid South Essex Foundation Trust
1 Jun 2026
High1 Jun 2026
FirstClass (Australian Travel Agency)
Sector not stated · Records not stated
Customer records allegedly breached by threat actor operating on underground hacking forums
1 Jun 2026
Were you affected?