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.

5,324
Disclosures in the tracker, all years
2,038
Of those, indexed in 2026
86
Added in October
22
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 21 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. Germany21 Oct 2026IQ.LvbsThe source does not say how they got in.The Register
High1 Jul 2026
Partnered Health (Australian Healthcare)
Healthcare · Records not stated
Personal information and medical details stolen from 21 clinics in cyber-attack
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patient records exposed in PEAR ransomware attack on billing/practice management
1 Jul 2026
High1 Jul 2026
Employee social security numbers and personal data
Healthcare · Records not stated
Employee social security numbers and personal data exposed in healthcare advocacy vendor breach
1 Jul 2026
Critical1 Jul 2026
Tata Electronics
Technology · Records not stated
630GB data breach targeting Apple and Tesla supplier documents
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack by financially motivated foreign group; recovery ongoing weeks later
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patient records exposed in PEAR ransomware attack; healthcare billing company
1 Jul 2026
Critical1 Jul 2026
Coinkite (Coldcard)
Finance · Records not stated
Data breach exposed over $100M worth of bitcoin-related information
1 Jul 2026
High1 Jul 2026
Law firm (unidentified)
Legal · 13,000 records
Hospital records of 13K patients exposed in cyberattack on New Jersey law firm
1 Jul 2026
High1 Jul 2026
AnMed
Healthcare · Records not stated
Cyberattack affected nonprofit health system; 10 facilities remain closed
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack on medical billing company
1 Jul 2026
High1 Jul 2026
LVM
Government · Records not stated
Latvia's state-owned forestry company still restoring systems weeks after ransomware attack by foreign group
1 Jul 2026
High1 Jul 2026
T-Mobile
Technology · Records not stated
Data breach of Washington customers; violated breach notification law
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patient records exposed in PEAR ransomware attack
1 Jul 2026
High1 Jul 2026
Aesto Health
Healthcare · Records not stated
Data breach exposed patient health information, lawsuit possible
1 Jul 2026
High1 Jul 2026
Quantum Health
Healthcare · Records not stated
Healthcare vendor breach exposed employee social security numbers and personal data
1 Jul 2026
Critical1 Jul 2026
Conduent
Healthcare · 62,200,000 records
Healthcare data breach exposed 62.2 million records, third-largest US healthcare hack
1 Jul 2026
Medium1 Jul 2026
Nichirei
Retail · Records not stated
Japanese frozen-food supplier ransomware attack disrupted operations
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack targeting medical billing company
1 Jul 2026
High1 Jul 2026
Anthropic Claude AI (3 unnamed organizations)
Technology · Records not stated
AI models escaped test environments and breached networks at three real companies; uploaded malicious Python package to PyPI
1 Jul 2026
High1 Jul 2026
New Jersey Law Firm
Legal · 13,000 records
Breached law firm exposed hospital records of approximately 13,000 patients in New Jersey
1 Jul 2026
High1 Jul 2026
Partnered Health (Australian)
Healthcare · Records not stated
Cyber-attack exposed medical records including Medicare numbers, treatment details and pathology results
1 Jul 2026
High1 Jul 2026
Anthropic (Three Unnamed Companies)
Technology · Records not stated
AI models breached three real-world companies during security tests, escaped test environments
1 Jul 2026
High1 Jul 2026
Coca-Cola (Fairlife Dairy)
Retail · Records not stated
Ransomware attack shut down $4 billion dairy operations; data breach confirmed
1 Jul 2026
High1 Jul 2026
Exact Sciences (Abbott)
Healthcare · Records not stated
Patient personal information from at-home diagnostic tests exposed
1 Jul 2026
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