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.

5,318
Disclosures in the tracker, all years
2,033
Of those, indexed in 2026
86
Added in October
20
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 22 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.

72 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 States21 Oct 2026Critical infrastructure organizations worldwideHow they got in: stolen or reused passwords.BleepingComputer
  2. United States21 Oct 2026Ohio LivingThe source does not say how they got in.Vermont Attorney General
  3. United States21 Oct 2026Michael J. Berger and Co., CPA LLPThe source does not say how they got in.Vermont Attorney General
  4. United States20 Oct 2026CSXThe source does not say how they got in.Vermont Attorney General
  5. United States20 Oct 2026Networking Technology, Inc.The source does not say how they got in.Vermont Attorney General
  6. United States20 Oct 2026Conduent Business Services, LLCThe source does not say how they got in.HIPAA Journal
  7. United States20 Oct 2026Central Ohio Primary Care PhysiciansHow they got in: stolen or reused passwords.HIPAA Journal
  8. United States20 Oct 2026Educational Testing ServiceThe source does not say how they got in.The Record
  9. United States20 Oct 2026Chevy Chase ClubThe source does not say how they got in.Vermont Attorney General
  10. United States20 Oct 2026Paradigm Healthcare ServicesThe source does not say how they got in.SecurityWeek
  11. United States19 Oct 2026Computer Task Group, IncorporatedThe source does not say how they got in.Vermont Attorney General
  12. United States19 Oct 2026Citizens BankThe source does not say how they got in.California Attorney General
Critical1 Jul 2026
Snowflake
Technology · 165,000,000 records
Hacker breached at least 165 organizations exposing data of 100+ million people
1 Jul 2026
Critical1 Jul 2026
Accenture
Technology · Records not stated
Threat actor stole vast trove of sensitive data including access keys and source code
1 Jul 2026
Critical1 Jul 2026
Accenture
Technology · Records not stated
Massive data breach exposed sensitive data including access keys and source code
1 Jul 2026
Critical1 Jul 2026
Snowflake
Technology · 165,000,000 records
165+ organizations breached, 100M+ people affected, customer data exposed
1 Jul 2026
High1 Jul 2026
Hugging Face
Technology · Records not stated
Breach involving rogue OpenAI agent that accessed exposed credentials across multiple services
1 Jul 2026
Critical1 Jul 2026
Accenture
Technology · Records not stated
Massive data breach with stolen sensitive data and access keys from consulting firm
1 Jul 2026
High1 Jul 2026
Partnered Health
Healthcare · Records not stated
Personal information and medical details stolen in cyber-attack affecting 21 clinics in Australia
1 Jul 2026
High1 Jul 2026
Coca-Cola (Fairlife)
Retail · Records not stated
Ransomware attack on dairy subsidiary Fairlife resulted in theft of company data
1 Jul 2026
High1 Jul 2026
Instructure
Education · Records not stated
Canvas platform supply chain breach generated 58% of all breach notices in 2026
1 Jul 2026
Critical1 Jul 2026
AdaptHealth
Healthcare · 4,099,999 records
Data breach affected 4.1 million individuals
1 Jul 2026
Critical1 Jul 2026
Accenture
Technology · Records not stated
Massive data breach involving sensitive data, access keys and source code theft
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after being ruled false positive twice
1 Jul 2026
High1 Jul 2026
Woori Bank
Finance · 17,551 records
Data breach involving 17,551 customer records due to external contractor negligence
1 Jul 2026
High1 Jul 2026
Partnered Health
Healthcare · Records not stated
Patient records and medical details stolen from 21 clinics in Australian healthcare provider cyber-attack
1 Jul 2026
High1 Jul 2026
Coca-Cola (Fairlife)
Retail · Records not stated
Ransomware attack on dairy subsidiary Fairlife resulted in data theft
1 Jul 2026
Critical1 Jul 2026
Snowflake
Technology · 165,000,000 records
Breaches of 165+ organizations exposing 100M+ people's data
1 Jul 2026
High1 Jul 2026
Accenture
Technology · Records not stated
Data breach confirmed; hacker stole 35GB of internal data including source code and credentials
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after initially ruled false positives
1 Jul 2026
High1 Jul 2026
Woori Bank
Finance · 17,551 records
Data breach involving approximately 17,551 customer records due to external contractor negligence
1 Jul 2026
High1 Jul 2026
Department of Homeland Security
Government · Records not stated
Network intrusion on Homeland Security Information Network supporting World Cup operations confirmed
1 Jul 2026
High1 Jul 2026
LVM (Latvia State Forestry)
Sector not stated · Records not stated
Ransomware attack by foreign financially motivated group, systems restoration ongoing
1 Jul 2026
High1 Jul 2026
Accenture
Technology · Records not stated
Data breach: hacker stole 35GB including source code and credentials
1 Jul 2026
High1 Jul 2026
Department of Homeland Security
Government · Records not stated
Network intrusion on Homeland Security Information Network supporting World Cup operations
1 Jul 2026
High1 Jul 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack by foreign financially motivated group, systems restoration ongoing
1 Jul 2026
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