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.
5,405
Disclosures in the tracker, all years
2,119
Of those, indexed in 2026
42
Added in November
43
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 6 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
Medium3 Aug 2023
3 Aug 2023
High3 Aug 2023
270K patient records exposed in Rhysida ransomware
Healthcare · 270,000 records
270K patient records exposed in Rhysida ransomware
3 Aug 2023
Critical3 Aug 2023
Prospect Medical Holdings (tech)
Technology · 1,300,000 records
1.3M patient records exposed across 16 hospitals in Rhysida ransomware
3 Aug 2023
Medium3 Aug 2023
Marquette University
Education · Records not stated
95K student and employee records exposed
3 Aug 2023
Critical3 Aug 2023
Prospect Medical Holdings
Healthcare · 1,300,000 records
1.3M patient records exposed in Rhysida ransomware across 16 hospitals
3 Aug 2023
High2 Aug 2023
MagicDuel
Technology · 138,443 records
138,443 records exposed, Email addresses, IP addresses, Nicknames, Passwords
2 Aug 2023
Medium2 Aug 2023
2 Aug 2023
Critical1 Aug 2023
Information Commissioner's Office
Government · Records not stated
Afghan spreadsheet data breach with sensitive government information exposed
1 Aug 2023
Critical1 Aug 2023
Ministry of Defence
Government · Records not stated
Afghan spreadsheet data breach exposed sensitive information; incident disclosed August 2023
1 Aug 2023
Critical1 Aug 2023
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Afghan spreadsheet data breach exposing sensitive information through ICO
1 Aug 2023
Critical1 Aug 2023
Ministry of Defence (UK)
Government · Records not stated
Afghan spreadsheet data breach exposed sensitive information, investigated by ICO
1 Aug 2023
Critical1 Aug 2023
Ministry of Defence (MoD)
Government · Records not stated
Afghan spreadsheet data breach exposed sensitive information
1 Aug 2023
Medium1 Aug 2023
McLaren Port Huron
Healthcare · 38,000 records
38K patient records exposed in BlackCat ransomware
1 Aug 2023
Medium1 Aug 2023
1 Aug 2023
Medium1 Aug 2023
1 Aug 2023
Medium1 Aug 2023
1 Aug 2023
Medium1 Aug 2023
1 Aug 2023
Medium1 Aug 2023
McLaren Macomb
Healthcare · 92,000 records
92K patient records exposed in BlackCat ransomware
1 Aug 2023
Medium1 Aug 2023
1 Aug 2023
Critical1 Aug 2023
McLaren Health Care
Healthcare · 2,200,000 records
2.2M patient records stolen in BlackCat/ALPHV ransomware
1 Aug 2023
High26 Jul 2023
BreachForums
Retail · 212,156 records
212,156 records exposed, Email addresses, IP addresses, Passwords, Private messages and 1 more
26 Jul 2023
High26 Jul 2023
Kenya MOH (E-Citizen)
Government · Records not stated
Hacktivist attack on Kenya's e-Citizen portal, government services disrupted
26 Jul 2023
Critical26 Jul 2023
Welltok
Healthcare · 8,500,000 records
8.5M patient records exposed via MOVEit vulnerability
26 Jul 2023
Critical25 Jul 2023
BookCrossing
Technology · 1,582,323 records
1,582,323 records exposed, Dates of birth, Email addresses, Geographic locations, IP addresses and 3 more
25 Jul 2023
Were you affected?