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.

5,366
Disclosures in the tracker, all years
2,082
Of those, indexed in 2026
146
Added in October
23
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 30 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.

78 incidents from 12 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 States29 Oct 2026The Research Foundation for Mental Health, Inc.The source does not say how they got in.Vermont Attorney General
  2. United States29 Oct 2026Del Monte Foods Corporation II Inc.The source does not say how they got in.California Attorney General
  3. United States29 Oct 2026Bangkok Bank PCL - New York BranchThe source does not say how they got in.California Attorney General
  4. United States29 Oct 2026IRhythm TechnologiesThe source does not say how they got in.SecurityWeek
  5. United States28 Oct 2026Photon HealthHow they got in: a known flaw in software the victim ran.California Attorney General
  6. United States28 Oct 2026CodeSecure Inc.The source does not say how they got in.Vermont Attorney General
  7. United States28 Oct 202611252227 Canada Inc.The source does not say how they got in.Vermont Attorney General
  8. United States28 Oct 2026Troutman Pepper Locke LLPThe source does not say how they got in.California Attorney General
  9. United States28 Oct 2026Legacy CooperativeThe source does not say how they got in.Vermont Attorney General
  10. United States28 Oct 2026Metro Tulsa Foot & Ankle SpecialistThe source does not say how they got in.Vermont Attorney General
  11. United States28 Oct 2026Quantum Health, Inc.The source does not say how they got in.Vermont Attorney General
  12. United States27 Oct 2026Sarasota US Topco, Inc. d/b/a Sarku Japan (“Sarku”)The source does not say how they got in.California Attorney General
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach affecting 62.2 million individuals; personal information compromised
1 Jan 2025
High1 Jan 2025
Otelier
Sector not stated · Records not stated
Personal information of approximately 500,000 hotel guests exposed after breach targeting hotel chains' booking system.
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Massive data breach affected more than 62.2 million individuals; printing and mailing services vendor
1 Jan 2025
High1 Jan 2025
Otelier
Retail · Records not stated
Hotel booking platform breach exposed personal data of approximately 500,000 hotel guests from major chains
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach affected 62.2 million individuals; personal information compromised including financial data
1 Jan 2025
High1 Jan 2025
Otelier
Sector not stated · Records not stated
Personal information of approximately 500,000 hotel guests exposed after platform breach affecting major hotel chains
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Technology · 62,200,000 records
62.2 million individuals affected in printing and mailing services vendor breach
1 Jan 2025
High1 Jan 2025
Otelier
Retail · Records not stated
Hotel booking platform breach exposed personal data of half a million hotel guests from major chains
1 Jan 2025
Critical1 Jan 2025
Cerner
Healthcare · Records not stated
Hackers accessed electronic health records stored on legacy network in January; patients notified months later
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach exposed personal information of 62.2 million individuals through printing and mailing vendor services
1 Jan 2025
High1 Jan 2025
Otelier (Hotel Platform)
Sector not stated · Records not stated
Personal information of 500,000+ hotel guests compromised from major hotel chains after threat actor attack
1 Jan 2025
High1 Jan 2025
TalkTalk
Technology · Records not stated
Data breach with hacker claims of customer data theft
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach affected 62.2 million individuals; January 2025 discovery of printing/mailing vendor breach
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
62.2 million individuals affected; vendor providing printing, mailing services
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Massive breach affecting 62.2 million individuals through printing/mailing vendor services
1 Jan 2025
High1 Jan 2025
Otelier
Retail · Records not stated
Personal information of approximately 500,000 hotel guests from major hotel chains compromised
1 Jan 2025
High1 Jan 2025
Marquis
Sector not stated · 672,000 records
Ransomware gang stole data of 672,000 people in cyberattack
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
January 2025 breach affected 62.2 million individuals; vendor provides printing and mailing services
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
62.2 million individuals affected in ransomware breach of government contractor
1 Jan 2025
Critical1 Jan 2025
Otelier
Retail · Records not stated
Breach exposing data on half a million hotel guests from major hotel chains
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Healthcare · 62,200,000 records
62.2 million records breached, third-largest US healthcare hack ever
1 Jan 2025
High1 Jan 2025
Huntsville Hospital
Healthcare · Records not stated
Patient data compromised through third-party vendor breach, exposing health information
1 Jan 2025
High1 Jan 2025
Klaviyo
Technology · Records not stated
Marketing tech platform inadvertently shared user sign-up information including passwords to advertisers
1 Jan 2025
Critical1 Jan 2025
Otelier (Hotel Management)
Retail · Records not stated
500,000 hotel guests' personal information exposed
1 Jan 2025
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