Weekly briefing No. 42 published 30 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.

5,405
Disclosures in the tracker, all years
2,119
Of those, indexed in 2026
42
Added in November
43
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 6 Nov 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.

77 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 States5 Nov 2026Xplicit Audio LLCThe source does not say how they got in.Vermont Attorney General
  2. United States5 Nov 2026Killingly Public Schools (KPS)The source does not say how they got in.Vermont Attorney General
  3. United States4 Nov 2026DreamHostHow they got in: a known flaw in software the victim ran.BleepingComputer
  4. United States4 Nov 2026The Town of LincolnThe source does not say how they got in.Vermont Attorney General
  5. United States4 Nov 2026Vanguard Group, Inc.The source does not say how they got in.Vermont Attorney General
  6. United States4 Nov 2026Byker & Associates, Inc.The source does not say how they got in.Vermont Attorney General
  7. United States4 Nov 2026RevSpring, Inc.The source does not say how they got in.California Attorney General
  8. United States4 Nov 2026Hoag Memorial Hospital PresbyterianThe source does not say how they got in.California Attorney General
  9. United States4 Nov 2026New Century Ophthamology P.C.The source does not say how they got in.Vermont Attorney General
  10. United States4 Nov 2026Alation Inc.The source does not say how they got in.Vermont Attorney General
  11. United States3 Nov 2026WorkOSThe source does not say how they got in.BleepingComputer (via SecOpsNews feed)
  12. United States3 Nov 2026Cognitive Health Technologies (New York)The source does not say how they got in.HIPAA Journal
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients impacted in largest healthcare data breach of 2026 in May
1 May 2026
High1 May 2026
Iliad Italia
Technology · Records not stated
Customer records, device registration, and subscription data offered on dark web
1 May 2026
Critical1 May 2026
NYC Health + Hospitals
Healthcare · 1,800,000 records
Hackers stole medical data, fingerprints, and personal information affecting at least 1.8 million people
1 May 2026
High1 May 2026
Atrium Health Navicent
Healthcare · Records not stated
Patient records system data breach potentially exposed patient records and personal information
1 May 2026
Critical1 May 2026
Foxconn
Technology · Records not stated
Ransomware attack stole approximately 8 terabytes of data
1 May 2026
High1 May 2026
ADT
Technology · 30,814 records
Data breach exposing customer personally identifiable information
1 May 2026
High1 May 2026
Canvas (education platform)
Education · Records not stated
Data extortion attack targeting education technology platform disrupted schools and colleges nationwide
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patients affected; largest healthcare data breach of 2026 at dental benefits administrator
1 May 2026
High1 May 2026
Canvas (Instructure)
Education · Records not stated
Ransomware attack affected Canvas learning management system at universities nationwide during finals week
1 May 2026
High1 May 2026
Queensland schools
Education · Records not stated
Tens of thousands of Queensland students and teachers affected in major education technology data breach
1 May 2026
High1 May 2026
UC Berkeley
Education · 600,000 records
ShinyHunters cybercrime group claimed 600K records stolen from Canvas learning management platform
1 May 2026
High1 May 2026
Atrium Health Navicent
Healthcare · Records not stated
Patient records system experienced data breach, potentially exposing patients' personal information and medical records
1 May 2026
Critical1 May 2026
Foxconn
Technology · Records not stated
Cyberattack on North American facilities with claims of stolen Apple and Nvidia data (8TB claimed)
1 May 2026
Critical1 May 2026
Canvas
Education · 275,000,000 records
Educational platform breach claims 275 million records; ShinyHunters gang reached deal to delete stolen data
1 May 2026
Critical1 May 2026
African National Congress (ANC)
Sector not stated · Records not stated
2 million private member records exposed and sold by hacker group
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting Canvas login system across thousands of universities
1 May 2026
Critical1 May 2026
Canvas
Education · 275,000,000 records
ShinyHunters hacking group claimed theft of data from educational platform affecting 275 million users
1 May 2026
Critical1 May 2026
African National Congress (ANC)
Sector not stated · Records not stated
Data breach exposed 2 million private member records sold by hacker group
1 May 2026
High1 May 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack affecting Canvas login systems at thousands of universities
1 May 2026
High1 May 2026
Roanoke (City/Organization)
Government · Records not stated
Phishing email breach exposed Social Security numbers and passport numbers
1 May 2026
Critical1 May 2026
Canvas (Instructure)
Education · 275,000,000 records
Data breach involving 275M records from educational platform, hackers agreed to delete stolen data
1 May 2026
Critical1 May 2026
ANC (African National Congress)
Government · Records not stated
Data breach exposed 2 million private member records sold by hacker group
1 May 2026
Critical1 May 2026
Conduent
Healthcare · 62,200,000 records
62.2 million records exposed, third-largest US healthcare breach ever
1 May 2026
Critical1 May 2026
DentaQuest
Healthcare · 15,000,000 records
15 million patient records stolen in largest healthcare data breach of 2026 (May incident)
1 May 2026
Were you affected?