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.
5,395
Disclosures in the tracker, all years
1,991
Of those, indexed in 2026
36
Added in October
13
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 13 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,944 results · Disclosures in 2026. Clear filters
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
Medium6 Sep 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Hackers Steal Claude Login Sessions With Infostealer Malware to…
6 Sep 2026
Critical3 Sep 2026
Roger Satterfield
Sector not stated · Records not stated
Roger Satterfield reports: An attacker handed an unknown corporate victim a comprehensive, 80-page security audit on Wednesday, not as a service, but as a postscript to the ransomware attack that had just consumed the…
3 Sep 2026
Medium3 Sep 2026
Thomson Reuters
Technology · Records not stated
Thomson Reuters disclosed on Wednesday that an unauthorized party obtained files from C-Track, the court case management platform sold by its West Publishing Corporation unit, in March 2026, affecting courts in 11 U.S.…
3 Sep 2026
Medium3 Sep 2026
Cybersecurity researchers have
Sector not stated · Records not stated
Cybersecurity researchers have disclosed details of a sophisticated Python-based Windows malware framework called BraZetsu that fuels an underground marketplace commercializing access to compromised hosts.
"Unlike the…
3 Sep 2026
Critical3 Sep 2026
Organisation not named
Sector not stated · 8,800,000 records
The disclosure as indexed does not name the organisation.
Hacker group published roughly 550GB of data after MAG reportedly refused to pay a ransom demand; the group says it gained access via exposed admin keys.
The post Manchester Airports Group Data on 8.8 Million People…
3 Sep 2026
Medium3 Sep 2026
Infostealers can
Sector not stated · Records not stated
Infostealers can expose far more than passwords, including authenticated sessions that may let attackers bypass MFA. Flare explains how defenders can prioritize compromised identities, determine whether stolen access…
3 Sep 2026
Medium3 Sep 2026
North Dakota Supreme Court
Legal · Records not stated
Joe Kurzewski reports: A criminal investigation is underway after data associated with the North Dakota Supreme Court was affected by a breach of a third-party vendor used by the court. According to a news release, the…
3 Sep 2026
Medium3 Sep 2026
Sealed court information and sensitive personal data were
Technology · Records not stated
Sealed court information and sensitive personal data were exposed in a breach of a Thomson Reuters records platform affecting courts in at least 12 U.S. states, the U.S. Virgin Islands and Canada.
3 Sep 2026
High2 Sep 2026
Manchester Airports Group
Government · 8,849,657 records
8,849,657 records exposed, Browser user agent details, Email addresses, Geographic locations, IP addresses and 4 more
2 Sep 2026
Medium2 Sep 2026
Bridget Byrne
Healthcare · Records not stated
Bridget Byrne reports: Luminis Health is experiencing a cybersecurity incident affecting certain systems across its organization, according to a Facebook post Tuesday. “Our priority remains providing safe, high-quality…
2 Sep 2026
Medium2 Sep 2026
DoD
Government · Records not stated
DysruptionHub raised the suspicion flag yesterday, but couldn’t get a straight answer from DOD as to whether refrigeration outages at 14 commissaries represented a cyberattack. The Military Times fared no…
2 Sep 2026
Critical2 Sep 2026
Organisation not named
Healthcare · 9,500,000 records
The disclosure as indexed does not name the organisation.
The healthcare data company Aesto informed federal regulators this week that more than 9.5 million people had sensitive information leaked during a cyberattack last December.
2 Sep 2026
High2 Sep 2026
The US healthcare provider
Healthcare · Records not stated
The US healthcare provider confirmed that sensitive patient and employee data, alongside financial and business information, were exfiltrated by a third party
2 Sep 2026
High2 Sep 2026
Manchester Airports Group
Government · 8,728,451 records
8,728,451 records exposed, Browser user agent details, Email addresses, Geographic locations, IP addresses and 4 more
2 Sep 2026
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