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.

5,323
Disclosures in the tracker, all years
2,037
Of those, indexed in 2026
85
Added in October
21
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 21 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.

72 incidents from 9 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. United States21 Oct 2026Critical infrastructure organizations worldwideHow they got in: stolen or reused passwords.BleepingComputer
  2. United States20 Oct 2026Conduent Business Services, LLCThe source does not say how they got in.HIPAA Journal
  3. United States20 Oct 2026Central Ohio Primary Care PhysiciansHow they got in: stolen or reused passwords.HIPAA Journal
  4. United States20 Oct 2026Educational Testing ServiceThe source does not say how they got in.The Record
  5. United States20 Oct 2026Chevy Chase ClubThe source does not say how they got in.Vermont Attorney General
  6. United States20 Oct 2026Paradigm Healthcare ServicesThe source does not say how they got in.SecurityWeek
  7. United States19 Oct 2026Computer Task Group, IncorporatedThe source does not say how they got in.Vermont Attorney General
  8. United States19 Oct 2026Citizens BankThe source does not say how they got in.California Attorney General
  9. United States19 Oct 2026STS Aviation GroupThe source does not say how they got in.California Attorney General
  10. United States18 Oct 2026Stitch Connect IncThe source does not say how they got in.California Attorney General
  11. United States17 Oct 2026Catawba CountyThe source does not say how they got in.Vermont Attorney General
  12. United States16 Oct 2026Johnson Investment CounselThe source does not say how they got in.Vermont Attorney General
Critical1 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen in major ransomware attack disrupting healthcare services
1 Aug 2026
High1 Aug 2026
Home Depot
Retail · Records not stated
Exposed private GitHub token gave unauthorized access to private repos and internal systems for a year
1 Aug 2026
Critical1 Aug 2026
Spectrum (Charter)
Technology · Records not stated
Data breach exposed 4.9 million confirmed accounts, 42 million claimed by attackers
1 Aug 2026
Critical1 Aug 2026
Paidwork
Finance · 23,000,000 records
23M accounts with bank data exposed
1 Aug 2026
High1 Aug 2026
Estée Lauder
Retail · Records not stated
Employee PII including SSNs and payroll data exposed
1 Aug 2026
Critical1 Aug 2026
Abbott Cancer Diagnostics
Healthcare · 30,000,000 records
30M rows stolen including 1M SSNs
1 Aug 2026
High1 Aug 2026
Synnovis NHS Trust
Healthcare · 900,000 records
Ransomware attack stole thousands of patient records from Essex NHS trust
1 Aug 2026
High1 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach affected approximately 170,000 individuals in South Carolina
1 Aug 2026
Critical1 Aug 2026
Conduent
Government · 25,000,000 records
Ransomware attack on government contractor exposed data of at least 25 million people
1 Aug 2026
Critical1 Aug 2026
ANTS (French ID agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records including personal data linked to identity documents
1 Aug 2026
Critical1 Aug 2026
KDDI Corporation
Technology · 12,000,000 records
12M email accounts and passwords exposed
1 Aug 2026
Critical1 Aug 2026
HSIN intel platform
Government · Records not stated
HSIN intel platform breached for weeks
1 Aug 2026
Critical1 Aug 2026
Meta
Technology · Records not stated
2019 breach exposed hundreds of millions of Facebook passwords, company fined $101.5M
1 Aug 2026
Medium1 Aug 2026
FirstClass
Sector not stated · Records not stated
Australian travel agency customer records compromised in alleged data breach
1 Aug 2026
Critical1 Aug 2026
Organisation not named
Healthcare · 1,200,000 records
The disclosure as indexed does not name the organisation.
2025 ransomware attack exposed personal data of 1.2 million individuals
1 Aug 2026
Critical1 Aug 2026
Marquis
Finance · 672,000 records
Ransomware attack stealing 672K records including names, addresses, card numbers from fintech firm
1 Aug 2026
High1 Aug 2026
Law firm (New Jersey)
Healthcare · Records not stated
13K hospital patient records exposed in cyberattack
1 Aug 2026
High1 Aug 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack, disclosed 6+ months after notification
1 Aug 2026
Critical1 Aug 2026
Otelier
Retail · Records not stated
Data on 500,000+ hotel guests exposed including customers from Marriott, Hilton, Hyatt brands
1 Aug 2026
High1 Aug 2026
New Jersey Law Firm
Legal · 13,000 records
Cyberattack exposed hospital records for nearly 13,000 patients in New Jersey
1 Aug 2026
High1 Aug 2026
SplitVPN
Finance · 865,336 records
865,336 records exposed, Device information, Email addresses, Geographic locations, IP addresses and 1 more
1 Aug 2026
High1 Aug 2026
South Korea Diplomatic Academy
Government · Records not stated
6000 diplomat and MFA employee records stolen
1 Aug 2026
Critical1 Aug 2026
Origin Energy Australia
Sector not stated · 900,000 records
900K customer records accessed by hacker
1 Aug 2026
Critical1 Aug 2026
Suno AI Music Platform
Technology · 55,300,000 records
55.3M accounts exposed with payment data
1 Aug 2026
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