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.

5,345
Disclosures in the tracker, all years
2,058
Of those, indexed in 2026
119
Added in October
11
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 27 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. United States23 Oct 2026Ford Audio-Video Systems, LLCThe source does not say how they got in.Vermont Attorney General
  2. United States23 Oct 2026Industrial and healthcare organizationsHow they got in: a known flaw in software the victim ran.The Hacker News
  3. United States23 Oct 2026EyeMed Vision Care, LLCThe source does not say how they got in.Vermont Attorney General
  4. United States23 Oct 2026Alabama Fire CollegeThe source does not say how they got in.Vermont Attorney General
  5. United States23 Oct 2026UltraMobile ImagingThe source does not say how they got in.HIPAA Journal
  6. United States23 Oct 2026Washington GastroenterologyThe source does not say how they got in.HIPAA Journal
  7. United States23 Oct 2026Tarter Krinsky & DroginThe source does not say how they got in.HIPAA Journal
  8. United States23 Oct 2026Quest DiagnosticsThe source does not say how they got in.SecurityWeek
  9. United States22 Oct 2026Dill Dill Carr Stonbraker & Hutchings, P.C.The source does not say how they got in.California Attorney General
  10. United States22 Oct 2026BASS Medical GroupThe source does not say how they got in.California Attorney General
  11. United States22 Oct 2026Summit School DistrictThe source does not say how they got in.Vermont Attorney General
  12. United States22 Oct 2026Nordace Limited d/b/a NordaceThe source does not say how they got in.Vermont Attorney General
High1 Mar 2026
CareCloud
Healthcare · Records not stated
Electronic health records of patients leaked after hackers accessed healthcare software systems
1 Mar 2026
Critical1 Mar 2026
LexisNexis
Legal · 400,000 records
400K users exposed including federal judges and .gov accounts via cloud system breach
1 Mar 2026
High1 Mar 2026
Lehigh Carbon Community College
Education · Records not stated
Data breach prompted school closure; extent of breach not fully disclosed
1 Mar 2026
High1 Mar 2026
CommonSpirit Health
Healthcare · 19,027 records
Healthcare consulting company data breach exposed 19,027 patient records and medical information
1 Mar 2026
High1 Mar 2026
DGFiP (French tax authority)
Government · 678,000 records
678,000 people and businesses affected, compromised credentials exposed tax and business info
1 Mar 2026
Critical1 Mar 2026
RingCentral
Technology · 1,600,000 records
1.6 million customer records exposed in data leak
1 Mar 2026
Critical1 Mar 2026
IDMerit
Technology · Records not stated
1 billion identity records exposed due to unprotected database
1 Mar 2026
Critical1 Mar 2026
TriZetto
Healthcare · 3,400,000 records
Year-long hack exposed records on 3.4 million people
1 Mar 2026
Critical1 Mar 2026
UK BioBank
Healthcare · Records not stated
Confidential health records from flagship medical research project exposed online multiple times
1 Mar 2026
Critical1 Mar 2026
UK BioBank
Healthcare · Records not stated
Confidential health records from medical research project exposed online
1 Mar 2026
Critical1 Mar 2026
UnitedHealthcare
Healthcare · Records not stated
One of the largest healthcare data breaches in American history involving multiple companies
1 Mar 2026
Critical1 Mar 2026
LiteLLM
Technology · Records not stated
Supply chain attack exposed over 430,000 CI/CD pipelines affecting over 2,500 organizations
1 Mar 2026
Critical1 Mar 2026
Conduent
Sector not stated · Records not stated
Breach compromised personal data of millions nationwide, notifications sent a year later
1 Mar 2026
Critical1 Mar 2026
Organisation not named
Healthcare · 1,200,000 records
The disclosure as indexed does not name the organisation.
Ransomware attack exposing personal data of 1.2 million individuals
1 Mar 2026
Critical1 Mar 2026
GuardDog
Healthcare · Records not stated
Telehealth company accessed and shared patient medical records from Epic platform with law firms without authorization
1 Mar 2026
Critical1 Mar 2026
CISA (US Agency)
Government · Records not stated
Breached through Cisco vulnerability, FIRESTARTER backdoor allowed persistent access through March
1 Mar 2026
Critical1 Mar 2026
Marquis
Finance · 672,000 records
Ransomware attack stole personal and financial data of over 672,000 people from fintech company
1 Mar 2026
High1 Mar 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Driver's license numbers and voter information from Multiethnic Cohort Study exposed in ransomware attack
1 Mar 2026
Critical1 Mar 2026
Fortinet FortiGate
Technology · Records not stated
73,932 FortiGate systems exposed with valid administrative and VPN credentials
1 Mar 2026
High1 Mar 2026
Multiethnic Cohort Study data
Education · Records not stated
Multiethnic Cohort Study data leaked following ransomware attack including driver's license numbers
1 Mar 2026
Critical1 Mar 2026
CISA (US Government)
Government · Records not stated
US agency breached through Cisco vulnerability, FIRESTARTER backdoor malware allowed persistent access through March
1 Mar 2026
High1 Mar 2026
Ransomware attack data
Education · Records not stated
Ransomware attack data leak from Multiethnic Cohort Study exposed driver's license numbers and voter registration data
1 Mar 2026
Critical1 Mar 2026
TriZetto (Year-long hack)
Healthcare · 3,400,000 records
Year-long network hack exposed records on 3.4 million people
1 Mar 2026
High1 Mar 2026
Foster City Government
Government · Records not stated
Ransomware attack forced city computer systems offline for days
1 Mar 2026
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