Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker
Disclosures in 2026
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.
5,282
Disclosures in the tracker, all years
1,995
Of those, indexed in 2026
41
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 17 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,949 results · Disclosures in 2026. Clear filters
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
Critical8 Jul 2026
8 Jul 2026
Medium7 Jul 2026
Chase Jordan
Government · Records not stated
Chase Jordan reports an update in the litigation stemming from a 2024 breach by Hunters International. This case has raised a number of issues about standing and negligence and has been up and down in the courts, with…
7 Jul 2026
Medium7 Jul 2026
KIRO7
Healthcare · 8,600 records
KIRO7 reports: The Washington Department of Social and Health Services (DSHS) is issuing a notice of a massive data breach that happened in March, potentially compromising the personal data of around 8,600 people. An…
7 Jul 2026
Critical7 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
The alleged victim, believed to be a small Ohio county, reportedly paid the extortion group to prevent the public release of sensitive stolen data.
The post County Government Reportedly Paid $1 Million to Cyber…
7 Jul 2026
Medium7 Jul 2026
Accenture
Sector not stated · Records not stated
IT services giant Accenture has confirmed it suffered a security breach after a threat actor claimed to have stolen 35 GB of source code and other data from the company.
7 Jul 2026
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