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.
5,362
Disclosures in the tracker, all years
2,076
Of those, indexed in 2026
136
Added in October
19
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.
Critical9 Jul 2026
NYC Health and Hospitals
Healthcare · 1,800,000 records
1.8M records stolen including biometrics
9 Jul 2026
Critical9 Jul 2026
Conduent Business Services
Sector not stated · 62,200,000 records
62.2M records exposed in ransomware attack
9 Jul 2026
Medium8 Jul 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
The threat actor claiming responsibility says they stole source code, encryption keys and more.
8 Jul 2026
Medium8 Jul 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
A financially motivated operation uses lures of cracked or pirated software to deliver a malware two-for-one combo for data theft and cryptomining.
8 Jul 2026
Medium8 Jul 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
For years, account takeover (ATO) followed a predictable script. Attackers bought stolen credentials in bulk, ran them through automated tools, and waited for matches. Credential stuffing was cheap, scalable, and for…
8 Jul 2026
Medium8 Jul 2026
The professional services giant
Sector not stated · Records not stated
The professional services giant says it contained the incident, remediated its source, and experienced no operational or service delivery impact.
The post Accenture Confirms Data Breach After Hacker Claims Source Code…
8 Jul 2026
Critical8 Jul 2026
Telco giant KDDI
Technology · Records not stated
Japanese telecommunications giant KDDI says that millions of people had their email addresses and passwords exposed after attackers breached an email platform used by five internet service providers (ISPs) in the…
8 Jul 2026
High8 Jul 2026
Tchap French Gov Messenger
Government · Records not stated
73K government accounts and 643K messages stolen
8 Jul 2026
Critical8 Jul 2026
HSIN security platform
Government · Records not stated
HSIN security platform breached by unauthorized party
8 Jul 2026
High8 Jul 2026
Aesthetic Surgical Images
Healthcare · Records not stated
Patient records stolen by INC_RANSOM
8 Jul 2026
Medium8 Jul 2026
8 Jul 2026
Critical8 Jul 2026
NYC Health Hospitals
Healthcare · 1,800,000 records
1.8M records stolen including biometrics
8 Jul 2026
Critical8 Jul 2026
8 Jul 2026
Critical8 Jul 2026
KDDI Corporation
Technology · 14,200,000 records
14.2M email credentials exposed across 6 ISPs
8 Jul 2026
Critical8 Jul 2026
DHS Homeland Security Network
Government · Records not stated
Federal intel-sharing platform breached
8 Jul 2026
Critical8 Jul 2026
One Medical Seniors
Healthcare · 830,000 records
Clinical and demographic records of 830K patients exposed
8 Jul 2026
High8 Jul 2026
Chemco Calgary
Sector not stated · Records not stated
Ransomware attack by Qilin group ongoing
8 Jul 2026
High8 Jul 2026
8 Jul 2026
High8 Jul 2026
8 Jul 2026
Critical8 Jul 2026
NYC Health and Hospitals
Healthcare · 1,800,000 records
1.8M records with biometrics and SSNs breached
8 Jul 2026
Critical8 Jul 2026
Nissan North America
Sector not stated · Records not stated
Employee SSNs and bank data stolen via PeopleSoft
8 Jul 2026
Critical8 Jul 2026
8 Jul 2026
Critical8 Jul 2026
8 Jul 2026
Critical8 Jul 2026
HSIN security network
Government · Records not stated
HSIN security network breached, data exfiltrated
8 Jul 2026
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