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.
5,292
Disclosures in the tracker, all years
2,005
Of those, indexed in 2026
50
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 18 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,969 results · Disclosures in 2026. Clear filters
High14 Sep 2026
Bedfordshire Hospital
Healthcare · Records not stated
Patient names, NHS numbers, and test results compromised in cyber attack
14 Sep 2026
Critical14 Sep 2026
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed sensitive data from millions of patients including health and insurance information
14 Sep 2026
High14 Sep 2026
Paylogix
Finance · Records not stated
Akira ransomware gang stole health, financial and identity data from tens of thousands of plan participants
14 Sep 2026
Critical14 Sep 2026
Medical billing company (unnamed)
Healthcare · 1,300,000 records
2025 ransomware attack exposed sensitive protected health data on 1.3M people, leaked to dark web
14 Sep 2026
High14 Sep 2026
Highland Oncology Group
Healthcare · Records not stated
2025 ransomware attack on Arkansas-based cancer care practice resulted in settlement litigation
14 Sep 2026
Critical14 Sep 2026
AT&T
Technology · 109,000,000 records
Two separate incidents in 2024 exposed data from 100M+ customers
14 Sep 2026
Critical14 Sep 2026
Bankinter/EVO Banco
Finance · 1,270,000 records
API vulnerability exposed financial and identity data of 1.27M records in Spain
14 Sep 2026
Critical14 Sep 2026
Revolut
Finance · Records not stated
Fintech company Revolut has disclosed a data breach after sharing data from an undisclosed number of customers with a threat actor impersonating a government agency.
14 Sep 2026
High13 Sep 2026
Chess.com (2026)
Technology · 4,653,212 records
4,653,212 records exposed, Email addresses, Geographic locations, Names, Usernames
13 Sep 2026
Medium12 Sep 2026
Not just Korea
Sector not stated · Records not stated
Shin Da-eun and Park Kang-su report: Korea was not the only country where victims who sent Google removal requests about illegally obtained sexual images ended up having their private information posted online, the…
12 Sep 2026
Medium11 Sep 2026
Florida
Government · Records not stated
The Florida Department of Motor Vehicles confirmed a data breach claimed by the cybercrime group ShinyHunters, saying it originated with the theft of credentials stored on a police officer's personal device.
11 Sep 2026
Medium11 Sep 2026
Florida
Government · Records not stated
The Florida Department of Highway Safety and Motor Vehicles (FLHSMV) has confirmed that its DAVID driver database suffered a data breach, saying the attackers gained access using credentials belonging to a police…
11 Sep 2026
Medium10 Sep 2026
ThreatsDay
Sector not stated · Records not stated
A lot of this week’s security news has the same awkward answer to one question: “Why was that allowed to work?”
An extension asks for access and takes too much. A trusted service becomes part of a phishing chain. An…
10 Sep 2026
Critical10 Sep 2026
IDScan
Sector not stated · Records not stated
A notice dated September 4 but not widely shared shows that IDScan acknowledged a data breach but did not specify how many people were affected.
10 Sep 2026
Medium10 Sep 2026
Surfshark VPN
Sector not stated · Records not stated
Surfshark disclosed that hackers accessed one of its internal test servers after a configuration error exposed it to the internet.
10 Sep 2026
Critical10 Sep 2026
IDScan
Technology · Records not stated
Identity verification company IDScan has confirmed that hackers accessed customer data stored in its cloud platform, days after reports linked the company to a massive database containing more than 153 million driver's…
10 Sep 2026
Critical10 Sep 2026
Organisation not named
Healthcare · 6,400,000 records
The disclosure as indexed does not name the organisation.
Connor Jones reports: McKesson’s cyberattack last month affected roughly 6.4 million individuals, according to a public breach notification service. The breach notification service added data leaked by serial extortionists…
10 Sep 2026
High10 Sep 2026
McKesson
Healthcare · 6,404,340 records
6,404,340 records exposed, Dates of birth, Email addresses, Employers, Genders and 4 more
10 Sep 2026
Critical9 Sep 2026
AdaptHealth
Sector not stated · 4,099,999 records
Healthcare company AdaptHealth has confirmed that data of 4.1 million people was exposed in a cyberattack discovered in July that was attributed to the ShinyHunters threat group.
9 Sep 2026
Medium9 Sep 2026
Electronic health record company
Healthcare · Records not stated
Veradigm said access was limited to a specific interface, and did not impact the company’s broader environment such as its networks, servers or databases. The incident did not result in operational disruptions, the…
9 Sep 2026
Critical9 Sep 2026
Veradigm
Healthcare · Records not stated
Healthcare technology company Veradigm disclosed a data breach after a cybersecurity incident at one of its third-party vendors exposed patients' personal data.
9 Sep 2026
Medium8 Sep 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
French authorities detained an 18-year-old suspected member of the ZeroBytes hacking group over cyberattacks against the country's tax authority and other organizations.
8 Sep 2026
Critical7 Sep 2026
Mathspace
Technology · 1,000,000 records
Online maths learning platform Mathspace disclosed over the weekend that attackers stole data from more than 1 million students, staff, and parents after breaching its Metabase internal reporting system.
7 Sep 2026
Medium6 Sep 2026
Natural Resources Wales
Sector not stated · Records not stated
Nation.Cymru reports: Sensitive personal information relating to current and former Natural Resources Wales employees has been exposed in a data breach. The public body said a spreadsheet containing employee…
6 Sep 2026
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