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.

5,341
Disclosures in the tracker, all years
2,054
Of those, indexed in 2026
111
Added in October
14
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 26 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. Australia22 Oct 2026Campbelltown Anglican Schools CouncilThe source does not say how they got in.Cyber Daily
  2. Australia20 Oct 2026AOMEI TechnologyThe source does not say how they got in.SecurityWeek
  3. Australia19 Oct 2026Poole GroupThe source does not say how they got in.Accountants Daily
  4. Australia16 Oct 2026Chadwick SwitchboardsThe source does not say how they got in.Cyber Daily
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of NHS patient records stolen in cyber attack; disclosure delayed over six months after notification.
1 Jun 2026
Critical1 Jun 2026
Veradigm
Healthcare · Records not stated
Electronic health records company; customer data stolen after hackers infiltrated vendor's systems.
1 Jun 2026
Critical1 Jun 2026
Fortinet
Technology · Records not stated
Credentials from approximately 74,000 Fortinet firewalls and VPN gateways stolen in FortiBleed data leak.
1 Jun 2026
High1 Jun 2026
Australia Medicare
Government · Records not stated
OpenAI agent accessed non-public government Medicare portal files in June; notice delayed 3 months
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customer records, second major hack in over a year
1 Jun 2026
Critical1 Jun 2026
Qilin/Essex NHS Trust
Healthcare · 900,000 records
Ransomware attack resulted in stolen patient records; hospitals identifying and warning patients
1 Jun 2026
Critical1 Jun 2026
Coupang
Retail · 33,700,000 records
Data breach exposed 33.7 million accounts, resulting in record $409 million fine from South Korea.
1 Jun 2026
High1 Jun 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach exposed patient information and health records affecting multiple hospital facilities.
1 Jun 2026
Critical1 Jun 2026
Odido
Sector not stated · 6,500,000 records
ShinyHunters breach exposed 6.5 million customer records with €1M ransom demand
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customers, second major hack in over a year
1 Jun 2026
High1 Jun 2026
FirstClass Travel Agency
Sector not stated · Records not stated
Alleged data breach of customer records from Sydney-based travel agency
1 Jun 2026
Critical1 Jun 2026
Canada Life
Finance · 5,500,000 records
Threat actor claimed 5.5 million records for sale on underground forum
1 Jun 2026
High1 Jun 2026
University of Western Australia
Education · Records not stated
Accidental leak of student records; second breach in six months
1 Jun 2026
High1 Jun 2026
Huntsville Hospital
Healthcare · Records not stated
Patient health information compromised through third-party vendor data breach
1 Jun 2026
High1 Jun 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, breach disclosed over six months after notification
1 Jun 2026
Critical1 Jun 2026
Fortinet
Technology · Records not stated
74,000 firewall and VPN gateway credentials stolen from configuration files in FortiBleed data leak
1 Jun 2026
Critical1 Jun 2026
Elasticsearch Database
Technology · Records not stated
Publicly exposed database leaked 24 billion stolen credentials from infostealers and breach collections
1 Jun 2026
Critical1 Jun 2026
Charter Communications
Technology · 42,000,000 records
Data breach exposing 42M customer records after ShinyHunters extortion threat
1 Jun 2026
Critical1 Jun 2026
Tata Electronics
Technology · Records not stated
Data breach confirmed with 630GB stolen including Apple and Tesla supplier documents
1 Jun 2026
High1 Jun 2026
LastPass
Technology · Records not stated
Data breach at third-party vendor exposing customer data confirmed
1 Jun 2026
Critical1 Jun 2026
Aflac Japan
Finance · 1,300,000 records
Data breach exposed 4.38 million customers' personal information
1 Jun 2026
High1 Jun 2026
FirstClass
Retail · Records not stated
Sydney-based travel agency hit by alleged data breach with customer records leaked by threat actor
1 Jun 2026
Critical1 Jun 2026
Canada Life
Finance · 5,500,000 records
5.5 million records allegedly compromised and offered for sale on underground cybercrime forum
1 Jun 2026
High1 Jun 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Second data breach in six months; student records accidentally leaked
1 Jun 2026
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