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
Critical1 Mar 2026
CareCloud
Healthcare · Records not stated
Hackers gained access to systems, potential leak of electronic health records
1 Mar 2026
High1 Mar 2026
Puerto Rico CESCO
Government · Records not stated
Driver's license and vehicle registration agency affected by cyberattack
1 Mar 2026
High1 Mar 2026
Companies House
Government · Records not stated
Security issue enabled unauthorized access to WebFiling service data for five months
1 Mar 2026
Critical1 Mar 2026
CISA (US Department)
Government · Records not stated
CISA breached through Cisco vulnerability; FIRESTARTER backdoor malware allowed persistent access through March 2026
1 Mar 2026
High1 Mar 2026
Foster City
Government · Records not stated
City computer system taken offline for days by ransomware attack
1 Mar 2026
Medium1 Mar 2026
Foster City
Government · Records not stated
Ransomware attack forced city computer system offline for multiple days; state of emergency declared
1 Mar 2026
High1 Mar 2026
Companies House
Government · Records not stated
Data exposed during five-month security issue; WebFiling service users' information potentially compromised
1 Mar 2026
Critical1 Mar 2026
Ransomware attack leading to data
Healthcare · Records not stated
Ransomware attack leading to data leak including driver's license numbers and voter IDs
1 Mar 2026
Critical1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records exposed online and offered for sale on Chinese website
1 Mar 2026
Medium1 Mar 2026
Foster City
Government · Records not stated
Ransomware attack forced city computer system offline for days; state of emergency declared
1 Mar 2026
Critical1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records from flagship medical research project leaked multiple times and exposed online
1 Mar 2026
High1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records from medical research project exposed online and offered for sale on Chinese website
1 Mar 2026
High1 Mar 2026
Companies House (UK)
Government · Records not stated
Data exposed during five-month security issue; all UK firms urged to check records
1 Mar 2026
Critical1 Mar 2026
PIH Health
Healthcare · 2,950,000 records
2024 hacking incident notifying 2.95 million patients
1 Mar 2026
High1 Mar 2026
Loblaw
Retail · Records not stated
Data breach affecting Canadian customers at Loblaw-owned stores
1 Mar 2026
Critical1 Mar 2026
CareCloud
Healthcare · Records not stated
Electronic health records of patients leaked after unauthorized access to healthcare software systems
1 Mar 2026
High1 Mar 2026
Lehigh Carbon Community College
Education · Records not stated
Data breach caused extended school closure, extent undetermined
1 Mar 2026
High1 Mar 2026
CommonSpirit Health
Healthcare · 19,027 records
Data breach exposed medical and personal data of 19,027 patients
1 Mar 2026
Critical1 Mar 2026
TriZetto Provider Solutions
Healthcare · 3,400,000 records
Year-long unauthorized access to IT environment exposed PHI of 3.4 million individuals
1 Mar 2026
Critical1 Mar 2026
UK BioBank
Healthcare · Records not stated
Confidential health records from medical research project exposed online multiple times
1 Mar 2026
Critical1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records from flagship medical research project exposed online, with data leaked multiple times
1 Mar 2026
Critical1 Mar 2026
UK BioBank
Healthcare · 500,000 records
Confidential health records from medical research project exposed online; 500K+ records
1 Mar 2026
Critical1 Mar 2026
UK Biobank
Healthcare · Records not stated
Confidential health records from medical research project exposed online multiple times
1 Mar 2026
High1 Mar 2026
Loblaw
Retail · Records not stated
Data breach affecting Canadian customers of Loblaw-owned stores
1 Mar 2026
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