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.

5,299
Disclosures in the tracker, all years
2,012
Of those, indexed in 2026
58
Added in October
14
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 19 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.

64 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. Denmark3 Oct 2026Technical University of DenmarkHow they got in: stolen or reused passwords.BleepingComputer
Medium13 Aug 2026
CRM provider Beacon has
Sector not stated · Records not stated
CRM provider Beacon has revealed that a compromised AWS access key was the likely root cause of the breach of 1500 UK charities’ data
13 Aug 2026
Critical13 Aug 2026
Organisation not named
Government · 1,395 records
The disclosure as indexed does not name the organisation.
Autonomous AI agents built on open-source frameworks breached Taiwanese government systems, compromised credentials, and probed a nuclear safety agency in a multi-day cyberattack that researchers say signals a new…
13 Aug 2026
High13 Aug 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Hackers breached facility via private APN, supplies heat to ~50,000 residents
13 Aug 2026
Critical13 Aug 2026
Change Healthcare
Healthcare · 100,000,000 records
2024 cyberattack exposed data affecting multiple healthcare providers including IU Health
13 Aug 2026
Critical13 Aug 2026
100K+ officer and justice staff records leaked
Government · Records not stated
100K+ officer and justice staff records leaked
13 Aug 2026
Critical13 Aug 2026
Polish Medical Records Platform
Healthcare · 19,000,000 records
19M patient records stolen in cyberattack
13 Aug 2026
Critical13 Aug 2026
DentaQuest Benefits
Healthcare · Records not stated
15M health records stolen in spring breach
13 Aug 2026
Critical13 Aug 2026
Basic-Fit Gyms
Sector not stated · Records not stated
1M members' bank details and PII exposed
13 Aug 2026
High13 Aug 2026
135K police officer contact records leaked
Government · Records not stated
135K police officer contact records leaked
13 Aug 2026
Critical13 Aug 2026
MyDr Poland
Healthcare · 19,000,000 records
19M patient records stolen from medical platform
13 Aug 2026
Critical13 Aug 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
100K+ police and government contacts leaked on dark web
13 Aug 2026
Critical13 Aug 2026
Banyumas Regency Gov
Government · Records not stated
2M resident records leaked by threat actor
13 Aug 2026
Critical13 Aug 2026
Credential Aggregator DB
Sector not stated · Records not stated
24B stolen credentials exposed in open database
13 Aug 2026
High13 Aug 2026
Ryanair
Retail · Records not stated
Data breach exposing court documents, flight data, and banking details claimed on hacker forums
13 Aug 2026
Critical13 Aug 2026
U.S. Federal Government
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including compromised White House-linked credentials
13 Aug 2026
High13 Aug 2026
CareCloud
Healthcare · 345,000 records
Cyberattack exposed data of 345,000 patients from EHR and RCM provider
13 Aug 2026
Critical13 Aug 2026
100K+ officers and staff records exposed
Government · Records not stated
100K+ officers and staff records exposed
13 Aug 2026
High13 Aug 2026
Preferred Financial Services
Finance · Records not stated
Play ransomware breach, financial PII exposed
13 Aug 2026
High13 Aug 2026
RingCentral
Technology · 1,596,490 records
1,596,490 records exposed, Email addresses, Names, Phone numbers, Physical addresses
13 Aug 2026
Critical13 Aug 2026
Marianne Kolbasuk McGee
Healthcare · Records not stated
Marianne Kolbasuk McGee reports: A Canadian hospital is dealing with a ransomware attack on its facility management systems that has affected the building’s doors and heating, ventilation and air conditioning…
13 Aug 2026
Critical13 Aug 2026
100K+ police and government contacts leaked
Government · Records not stated
100K+ police and government contacts leaked
13 Aug 2026
Critical13 Aug 2026
Snowflake Breach Victims
Technology · 165,000,000 records
Billions of records stolen across 165 organizations
13 Aug 2026
Critical13 Aug 2026
One Medical
Healthcare · Records not stated
8.8TB stolen from legacy systems by ShinyHunters
13 Aug 2026
Critical13 Aug 2026
Morguard
Finance · Records not stated
Data exfiltration threatened by Helix ransomware
13 Aug 2026
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