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.

5,357
Disclosures in the tracker, all years
2,073
Of those, indexed in 2026
134
Added in October
17
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 28 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.

75 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 States27 Oct 2026NorthShore Health CentersThe source does not say how they got in.HIPAA Journal
  2. United States27 Oct 2026University of New Mexico Health SystemThe source does not say how they got in.The Record
  3. United States26 Oct 2026Chisholm, Persson & Ball, P.C.The source does not say how they got in.Vermont Attorney General
  4. United States26 Oct 2026Alpha Omega Alpha Honor Medical SocietyThe source does not say how they got in.Vermont Attorney General
  5. United States26 Oct 2026USForex Inc.The source does not say how they got in.California Attorney General
  6. United States26 Oct 2026Monmouth UniversityThe source does not say how they got in.Vermont Attorney General
  7. United States26 Oct 2026Denver Health Medical PlanThe source does not say how they got in.HIPAA Journal
  8. United States24 Oct 2026Brooklyn Counseling ServicesThe source does not say how they got in.Vermont Attorney General
  9. United States24 Oct 2026Northeastern Mental Health CenterThe source does not say how they got in.Vermont Attorney General
  10. United States23 Oct 2026Navigate 360, LLCThe source does not say how they got in.California Attorney General
  11. United States23 Oct 2026Apollo Management Holdings, L.P.The source does not say how they got in.California Attorney General
  12. United States23 Oct 2026RL Schreiber, Inc.The source does not say how they got in.Vermont Attorney General
Critical1 Nov 2025
Gainsight/Google
Technology · Records not stated
Hackers stole data from 200 companies following Gainsight breach
1 Nov 2025
Critical1 Nov 2025
Pajemploi
Government · 1,200,000 records
1.2 million individuals' data exposed in cybersecurity incident
1 Nov 2025
Critical1 Nov 2025
Habib Bank AG Zurich
Finance · Records not stated
Russian hackers breached bank stealing 2.5TB of data including customer records and internal documents
1 Nov 2025
Critical1 Nov 2025
SitusAMC
Finance · Records not stated
Breach exposed data from over 100 financial institutions, third-party risk exposure
1 Nov 2025
High1 Nov 2025
Washington Post
Technology · Records not stated
Data breach linked to Oracle hacks
1 Nov 2025
Critical1 Nov 2025
Asahi
Sector not stated · 1,500,000 records
Ransomware attack exposed data of 1.5 million people including names, addresses, phone numbers
1 Nov 2025
High1 Nov 2025
Harvard University
Education · Records not stated
Alumni Affairs and Development Office systems accessed, donor records and personal information exposed
1 Nov 2025
Critical1 Nov 2025
Change Healthcare
Healthcare · 100,000,000 records
Cybersecurity breach impacting US healthcare operations and claims adjudication
1 Nov 2025
High1 Nov 2025
SitusAMC
Finance · Records not stated
Data breach impacting JPMorgan, Citi, and Morgan Stanley; vendor-related incident in financial services
1 Nov 2025
Critical1 Nov 2025
Pajemploi
Government · 1,200,000 records
Data breach exposing up to 1.2 million individuals' information at French government agency
1 Nov 2025
High1 Nov 2025
Asahi
Sector not stated · 1,500,000 records
Ransomware attack exposed data of 1.5 million people including names, gender, addresses, phone numbers
1 Nov 2025
High1 Nov 2025
New Hampshire Supreme Court
Legal · Records not stated
13 years of case files exposed; stranger had unauthorized access to court records for extended period
1 Nov 2025
Critical1 Nov 2025
Pajemploi
Government · 1,200,000 records
Data breach exposed information of over 1.2 million individuals at French agency
1 Nov 2025
High1 Nov 2025
Harvard University
Education · Records not stated
Alumni Affairs and Development Office systems accessed; exposed donor records and personal information
1 Nov 2025
Critical1 Nov 2025
TriZetto Provider Solutions
Healthcare · 3,400,000 records
Unauthorized IT environment access exposed PHI of 3.4M individuals
1 Nov 2025
High1 Nov 2025
Ernst & Young
Sector not stated · Records not stated
Data breach disclosed in weekly breach news roundup
1 Nov 2025
Critical1 Nov 2025
Pajemploi
Government · 1,200,000 records
Data breach affecting 1.2 million people including social security information
1 Nov 2025
High1 Nov 2025
Banking Industry Vendor
Finance · Records not stated
Cyberattack compromised sensitive data of multiple banking clients
1 Nov 2025
High1 Nov 2025
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Unauthorized access to information systems exposed donor records and personal information
1 Nov 2025
Critical1 Nov 2025
SitusAMC
Finance · Records not stated
Data breach affecting JPMorgan, Citi, Morgan Stanley; vendor-related incident impacting financial services
1 Nov 2025
Critical1 Nov 2025
Coupang
Retail · 33,700,000 records
33.7 million customers' personal information exposed in data breach
1 Nov 2025
High1 Nov 2025
Unauthorized access to alumni and donor records
Education · Records not stated
Unauthorized access to alumni and donor records
1 Nov 2025
High1 Nov 2025
Unauthorized access to information systems
Education · Records not stated
Unauthorized access to information systems exposed donor records and personal information
1 Nov 2025
High1 Nov 2025
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Unauthorized party accessed information systems; donor records and personal information exposed
1 Nov 2025
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