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.

5,344
Disclosures in the tracker, all years
2,057
Of those, indexed in 2026
118
Added in October
15
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. Germany21 Oct 2026IQ.LvbsThe source does not say how they got in.The Register
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
Medium10 Feb 2026
Toy Battles
Technology · 1,017 records
1,017 records exposed, Chat logs, Email addresses, IP addresses, Usernames
10 Feb 2026
Medium10 Feb 2026
Organisation not named
Healthcare · 5,600 records
The disclosure as indexed does not name the organisation.
5,600 records exposed, Dates of birth, Email addresses, Names, Places of birth and 1 more
10 Feb 2026
High6 Feb 2026
Substack
Technology · 663,121 records
663,121 records exposed, Email addresses, Phone numbers
6 Feb 2026
High5 Feb 2026
Betterment
Finance · 1,435,174 records
1,435,174 records exposed, Dates of birth, Device information, Email addresses, Employers and 5 more
5 Feb 2026
Critical1 Feb 2026
Conduent
Healthcare · 62,200,000 records
62.2 million people affected in third-largest US healthcare breach involving printing and document processing services
1 Feb 2026
High1 Feb 2026
Munson Healthcare
Healthcare · 120,000 records
120,000 patients' data compromised in data breach
1 Feb 2026
Critical1 Feb 2026
Mexican Government Agencies
Government · Records not stated
Multiple federal agencies breached via AI tools (Claude, ChatGPT); millions of records stolen Dec 2025-Feb 2026
1 Feb 2026
High1 Feb 2026
Anthem
Healthcare · Records not stated
Data breach impacting some Anthem members via Conduent
1 Feb 2026
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party privacy breach affecting members
1 Feb 2026
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party potential privacy breach affecting members' data
1 Feb 2026
High1 Feb 2026
Blue Shield of California
Healthcare · Records not stated
Third-party privacy breach notification to members; unauthorized access to member data
1 Feb 2026
Critical1 Feb 2026
Mexican Government Agencies
Government · Records not stated
Multiple federal agencies breached using AI tools (Claude, ChatGPT) millions of records exposed
1 Feb 2026
High1 Feb 2026
University of Pennsylvania
Education · Records not stated
ShinyHunters leaked confidential donor records and internal files
1 Feb 2026
Were you affected?