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.

5,314
Disclosures in the tracker, all years
2,028
Of those, indexed in 2026
76
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
MCBS
Healthcare · 1,200,000 records
Atlanta-based medical business management company data breach affected 1.2 million individuals
1 Aug 2026
High1 Aug 2026
Illuminate Education
Education · Records not stated
Data breach at Wisconsin-based edtech company resulted in FTC settlement and data deletion agreement
1 Aug 2026
High1 Aug 2026
Unnamed Law Firm
Legal · 13,000 records
Cyberattack on law firm exposed hospital records for approximately 13,000 patients in New Jersey
1 Aug 2026
High1 Aug 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Thousands of patient records stolen during major ransomware attack disrupting healthcare services
1 Aug 2026
High1 Aug 2026
Essex NHS Trust
Healthcare · 900,000 records
Thousands of patient records stolen in cyber attack; disclosure delayed over 6 months
1 Aug 2026
Critical1 Aug 2026
U.S. Civil Service/White House
Government · Records not stated
Thousands of civil servants' passwords exposed, including White House-linked accounts
1 Aug 2026
High1 Aug 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach disclosed affecting approximately 170,000 individuals
1 Aug 2026
Critical1 Aug 2026
Fairlife (Coca-Cola subsidiary)
Retail · Records not stated
Ransomware attack by Anubis leaked 1 TB of stolen data after ransom demand refused
1 Aug 2026
High1 Aug 2026
Legend Senior Care
Healthcare · Records not stated
Ransomware attack disclosed; affected senior care provider data
1 Aug 2026
High1 Aug 2026
Windward Life Care
Healthcare · Records not stated
Ransomware attack disclosed; affected senior care provider data
1 Aug 2026
Critical1 Aug 2026
Conduent
Government · Records not stated
Ransomware attack on government contractor exposed data affecting 25+ million people
1 Aug 2026
High1 Aug 2026
EY Global
Finance · Records not stated
Personal records stolen across March and April
1 Aug 2026
Critical1 Aug 2026
Conduent Healthcare Systems
Healthcare · Records not stated
62M SSNs and medical records exposed
1 Aug 2026
High1 Aug 2026
KT Corp
Technology · Records not stated
Data breach confirmed with hefty fine issued by South Korea's Personal Information Protection Commission
1 Aug 2026
Critical1 Aug 2026
Fairlife (Coca-Cola subsidiary)
Retail · Records not stated
Ransomware attack by Anubis group, 1 TB of data leaked after ransom refused
1 Aug 2026
High1 Aug 2026
South Korea Foreign Ministry
Government · Records not stated
6000 diplomat records stolen over 10 months
1 Aug 2026
High1 Aug 2026
U.S. Government civil servants
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including White House credentials
1 Aug 2026
High1 Aug 2026
Gaming accounts
Technology · Records not stated
Over 11 million gaming account credentials exposed in 2024 data leaks
1 Aug 2026
High1 Aug 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
Data breach with cybersecurity vulnerabilities; fined €42 million for GDPR violations and lack of basic security controls
1 Aug 2026
High1 Aug 2026
Ransomware attack resulted in data
Education · Records not stated
Ransomware attack resulted in data leak including driver's license numbers and voter registration data
1 Aug 2026
Critical1 Aug 2026
Medical Computer Business Services
Healthcare · 1,300,000 records
1.3M patient health records leaked to dark web
1 Aug 2026
High1 Aug 2026
Years-long data breach of residents' private health-related information
Healthcare · Records not stated
Years-long data breach of residents' private health-related information
1 Aug 2026
High1 Aug 2026
Synnovis
Healthcare · 900,000 records
Ransomware attack on NHS trust in Essex stole thousands of patient records during major cyberattack
1 Aug 2026
High1 Aug 2026
Fairlife
Retail · Records not stated
Anubis ransomware leaked 1TB stolen data after Coca-Cola refused ransom
1 Aug 2026
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