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.
5,493
Disclosures in the tracker, all years
2,081
Of those, indexed in 2026
144
Added in October
21
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.
76 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.
- France20 Oct 2026US tax preparation businessesThe source does not say how they got in.The Record
High1 Feb 2026
Anthem
Healthcare · Records not stated
Data breach via Conduent affecting some Anthem insurance members
1 Feb 2026
Critical1 Feb 2026
Unknown Organization
Sector not stated · 3,000,000,000 records
Misconfigured cloud database exposed 3 billion records including SSNs and plaintext passwords
1 Feb 2026
Critical1 Feb 2026
Conduent Business Services
Technology · 25,000,000 records
Ransomware attack exposed data on more than 25 million individuals from government contractor
1 Feb 2026
Critical1 Feb 2026
Organisation not named
Education · Records not stated
The disclosure as indexed does not name the organisation.
Multiethnic Cohort Study data including driver's license numbers and voter registration leaked via ransomware
1 Feb 2026
Critical1 Feb 2026
Mexican Federal Government
Government · Records not stated
Nine agencies breached via AI platform exploits (Claude Code, ChatGPT); millions of records stolen
1 Feb 2026
Critical1 Feb 2026
Multiple (Credential Leak)
Technology · 149,000,000 records
149 million passwords exposed including 48 million Gmail accounts in massive credential database leak
1 Feb 2026
Critical1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack brought down computer network, canceling surgeries and closing clinics
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack brought down computer network, causing surgeries to be canceled and clinics closed
1 Feb 2026
High1 Feb 2026
FirstClass
Sector not stated · Records not stated
Australian travel agency customer records allegedly breached and posted on underground forums
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack shut down computer network; surgeries canceled and clinics closed
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disabled computer network; surgeries canceled and clinics closed
1 Feb 2026
Critical1 Feb 2026
Mexican Government (9 agencies)
Government · Records not stated
Single hacker exploited Claude Code and OpenAI ChatGPT to breach 9 federal agencies Dec 2025-Feb 2026
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack on hospital network caused surgeries to be canceled and clinics closed
1 Feb 2026
High1 Feb 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Patient data compromised through third-party breach affecting multiple facilities
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disabled computer network, cancelled surgeries and closed clinics
1 Feb 2026
Critical1 Feb 2026
Exposed cloud database
Sector not stated · 3,000,000,000 records
Misconfigured database leaked 3 billion records including SSNs and plaintext passwords
1 Feb 2026
Critical1 Feb 2026
Unknown misconfigured database
Sector not stated · 3,000,000,000 records
3 billion records exposed including SSNs and plaintext passwords
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack disrupted network; surgeries canceled and clinics closed
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack brought down computer network, canceled surgeries and closed clinics
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack shut down computer network, cancelled surgeries and clinics
1 Feb 2026
High1 Feb 2026
KT Corporation
Technology · Records not stated
Customer data breach; South Korea fined telco $39 million for personal information exposure
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack on hospital network forced closure of clinics and cancellation of surgeries
1 Feb 2026
Medium1 Feb 2026
Malaysia Airlines
Sector not stated · Records not stated
Claimed by Qilin ransomware group on leak site, though no proof or data samples provided
1 Feb 2026
High1 Feb 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Ransomware attack brought down computer network; surgeries canceled, clinics closed
1 Feb 2026
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