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.
5,574
Disclosures in the tracker, all years
2,089
Of those, indexed in 2026
8
Added in November
22
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 3 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
Critical1 Feb 2024
UnitedHealthcare
Healthcare · Records not stated
2024 cyberattack exposed millions of patients' health and insurance information
1 Feb 2024
High1 Feb 2024
Walmart (Spark Driver portal)
Retail · Records not stated
Cyberattack on crowdsourcing delivery service portal, sensitive employee/driver data accessed
1 Feb 2024
High1 Feb 2024
Advania
Technology · Records not stated
Swedish cloud provider breach affecting at least 60 customers, including healthcare services
1 Feb 2024
High1 Feb 2024
Walmart Spark
Retail · Records not stated
Crowdsourcing delivery service breached, sensitive driver data accessed
1 Feb 2024
High1 Feb 2024
Walmart (Spark Driver)
Retail · Records not stated
Malicious actors accessed sensitive data of Spark Driver delivery service drivers
1 Feb 2024
Critical1 Feb 2024
McLaren Health Care
Healthcare · Records not stated
Two ransomware breaches in 2023-2024 affected 3.2M+ victims; settled class-action for $14M
1 Feb 2024
Critical1 Feb 2024
TriZetto
Healthcare · 3,400,000 records
3.4 million people's health and personal data stolen in 2024 cyberattack affecting health insurance tech provider
1 Feb 2024
High1 Feb 2024
Walmart Spark Driver
Retail · Records not stated
Cyberattack accessed sensitive data of delivery drivers through Spark Driver portal
1 Feb 2024
High1 Feb 2024
Walmart
Retail · Records not stated
Spark Driver portal breached, sensitive data of delivery drivers accessed
1 Feb 2024
Critical1 Feb 2024
Change Healthcare
Healthcare · 100,000,000 records
Ransomware attack in Feb 2024 exposed data from up to 100 million people
1 Feb 2024
Critical1 Feb 2024
Viamedis / Almerys (France)
Healthcare · Records not stated
33M health insurance records stolen from two major French third-party payment providers
1 Feb 2024
Medium1 Feb 2024
Ernest Health
Healthcare · 94,000 records
94K patient records exposed in ransomware across 30 hospitals
1 Feb 2024
High31 Jan 2024
Lurie Children's Hospital
Healthcare · Records not stated
790K pediatric patient records stolen in Rhysida ransomware
31 Jan 2024
Critical29 Jan 2024
Fulton County GA
Government · Records not stated
LockBit ransomware disrupted county courts and government
29 Jan 2024
High27 Jan 2024
MyPertamina
Technology · 5,970,416 records
5,970,416 records exposed, Dates of birth, Email addresses, Genders, Names and 3 more
27 Jan 2024
High24 Jan 2024
Ambulance Victoria
Healthcare · Records not stated
30,000+ employee records stolen by Agenda ransomware group
24 Jan 2024
Critical22 Jan 2024
Trello
Technology · 15,111,945 records
15,111,945 records exposed, Email addresses, Names, Usernames
22 Jan 2024
Medium22 Jan 2024
Affinity Credit Union (Saskatchewan)
Finance · Records not stated
Member data compromised in cyberattack on Saskatchewan credit union
22 Jan 2024
Medium22 Jan 2024
22 Jan 2024
High22 Jan 2024
EquiLend Holdings
Finance · Records not stated
LockBit ransomware disrupted securities lending platform
22 Jan 2024
High21 Jan 2024
Subway
Technology · Records not stated
LockBit ransomware stole financial data from sandwich chain
21 Jan 2024
Critical20 Jan 2024
Tietoevry (Finland/Sweden)
Technology · Records not stated
Akira ransomware disrupted Tietoevry cloud hosting, Swedish universities and firms hit
20 Jan 2024
Medium20 Jan 2024
20 Jan 2024
High19 Jan 2024
HPE / Hewlett Packard Enterprise
Technology · Records not stated
Russian Midnight Blizzard accessed email and SharePoint
19 Jan 2024
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