Weekly briefing No. 41 published 4 Oct 2026
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.

5,325
Disclosures in the tracker, all years
2,040
Of those, indexed in 2026
97
Added in October
24
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 23 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.

71 incidents from 11 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.

  1. United States23 Oct 2026Tarter Krinsky & DroginThe source does not say how they got in.HIPAA Journal
  2. United States23 Oct 2026Quest DiagnosticsThe source does not say how they got in.SecurityWeek
  3. United States22 Oct 2026Summit School DistrictThe source does not say how they got in.Vermont Attorney General
  4. United States22 Oct 2026Nordace Limited d/b/a NordaceThe source does not say how they got in.Vermont Attorney General
  5. United States22 Oct 2026Deposition Solutions, LLC (d/b/a Lexitas)The source does not say how they got in.California Attorney General
  6. United States22 Oct 2026Opportune LLPThe source does not say how they got in.California Attorney General
  7. United States22 Oct 2026Transformative Healthcare, LLCThe source does not say how they got in.HIPAA Journal
  8. United States22 Oct 2026American Renal Management LLCThe source does not say how they got in.HIPAA Journal
  9. United States22 Oct 2026Ridgeway Pharmacy LtdHow they got in: a supplier or vendor that was compromised first.HIPAA Journal
  10. United States22 Oct 2026City of Columbia, South CarolinaThe source does not say how they got in.The Record
  11. United States22 Oct 2026RailwayThe source does not say how they got in.TechCrunch
  12. United States21 Oct 2026Critical infrastructure organizations worldwideHow they got in: stolen or reused passwords.BleepingComputer
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after being ruled false positive twice
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after twice ruled false positive
1 Jul 2026
High1 Jul 2026
LVM (Latvian Forestry Company)
Sector not stated · Records not stated
Ransomware attack attributed to foreign financially motivated group
1 Jul 2026
High1 Jul 2026
LVM (Latvian forestry company)
Sector not stated · Records not stated
Ransomware attack by foreign financially motivated group; systems still being restored
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after two false positive rulings
1 Jul 2026
Critical1 Jul 2026
FortiBleed/Fortinet
Technology · Records not stated
73,932 FortiGate firewall administrative and VPN credentials exposed via credential exposure campaign
1 Jul 2026
High1 Jul 2026
Organisation not named
Healthcare · Records not stated
The disclosure as indexed does not name the organisation.
Patient records stolen in cyberattack affecting 21 clinics, personal info and medical notes exposed
1 Jul 2026
Critical1 Jul 2026
Network intrusion
Government · Records not stated
Network intrusion confirmed on Homeland Security Information Network
1 Jul 2026
High1 Jul 2026
LastPass
Technology · Records not stated
Data breach at third-party vendor exposed customer data; latest breach confirmed
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network; initially ruled false positive twice
1 Jul 2026
Critical1 Jul 2026
Partnered Clinics (Australia)
Healthcare · Records not stated
Cyber-attack exposed Medicare numbers, treatment details, pathology results of patients
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network supporting World Cup games
1 Jul 2026
High1 Jul 2026
Network intrusion and data breach
Government · Records not stated
Network intrusion and data breach confirmed after initially ruled false positives
1 Jul 2026
Critical1 Jul 2026
MCBS Medical
Healthcare · 1,260,000 records
Medical billing company; 1.26 million patients exposed in PEAR ransomware attack affecting healthcare billing data
1 Jul 2026
High1 Jul 2026
Department for Education
Education · Records not stated
Data breach claimed by ExfilSquad group in ransomware attack
1 Jul 2026
Critical1 Jul 2026
Fortinet (FortiBleed campaign)
Technology · Records not stated
73,000+ FortiGate firewalls and VPN gateways exposed with valid admin and VPN credentials
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
1.26 million patients exposed in PEAR ransomware attack on healthcare billing company
1 Jul 2026
Critical1 Jul 2026
Healthcare billing company ransomware attack
Healthcare · 1,260,000 records
Healthcare billing company ransomware attack exposed 1.26 million patient records in PEAR ransomware attack.
1 Jul 2026
High1 Jul 2026
KT (Korean Telecommunications)
Technology · Records not stated
Personal data breach and unauthorized micropayment damages via illegal base stations
1 Jul 2026
High1 Jul 2026
Department for Homeland Security
Government · Records not stated
Network intrusion on Homeland Security Information Network confirmed after false positives
1 Jul 2026
Critical1 Jul 2026
Organisation not named
Healthcare · 1,260,000 records
The disclosure as indexed does not name the organisation.
PEAR ransomware attack on medical billing company exposed 1.26 million patient records
1 Jul 2026
High1 Jul 2026
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Network intrusion on Homeland Security Information Network confirmed after false positives
1 Jul 2026
High1 Jul 2026
Cerner (Huntsville Hospital)
Healthcare · Records not stated
Patient data compromised through third-party vendor breach at Huntsville Hospital Health System
1 Jul 2026
Critical1 Jul 2026
Healthcare billing company
Healthcare · 1,260,000 records
Healthcare billing company exposed 1.26 million patient records in PEAR ransomware attack
1 Jul 2026
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