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.
5,369
Disclosures in the tracker, all years
2,083
Of those, indexed in 2026
146
Added in October
23
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 30 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
Critical8 May 2024
Ascension Health
Healthcare · 5,600,000 records
5.6M patient records compromised in Black Basta ransomware across 140 hospitals
8 May 2024
Medium7 May 2024
7 May 2024
High5 May 2024
5 May 2024
High5 May 2024
City of Wichita KS
Government · Records not stated
LockBit ransomware attack disabled city services
5 May 2024
Medium2 May 2024
2 May 2024
Critical1 May 2024
Dell
Technology · 49,000,000 records
Brute-force attack on partner portal exposed 49 million customer records
1 May 2024
High1 May 2024
European Parliament
Government · Records not stated
Massive data breach in recruiting platform affecting staff data in May 2024
1 May 2024
Critical1 May 2024
Snowflake customers (165+ organizations)
Technology · 165,000,000 records
Identity-based attacks on Snowflake customers including Rockstar Games, AT&T, Advanced Auto Parts, LendingTree; billions of records stolen
1 May 2024
High1 May 2024
Ohio Lottery
Government · 500,000 records
Cybersecurity incident revealing sensitive information of over 500,000 people
1 May 2024
Critical1 May 2024
Ohio Lottery
Government · 500,000 records
Cybersecurity incident exposed sensitive information of over 500K people
1 May 2024
Critical1 May 2024
Identity-based attacks
Technology · Records not stated
Identity-based attacks exposed customer data across 165 organizations; extortion campaign netted $2.7M
1 May 2024
Critical1 May 2024
Rockstar Games
Technology · Records not stated
Data breached through Anodot's Snowflake access as part of 165-organization attack
1 May 2024
High1 May 2024
Taft Stettinius
Legal · Records not stated
Law firm reported data breach among 21 law firms breached in 2024
1 May 2024
High1 May 2024
First Nations Health Authority
Healthcare · Records not stated
Attack by INC ransomware group detected and interrupted
1 May 2024
Critical1 May 2024
Organisation not named
Technology · 109,000,000 records
The disclosure as indexed does not name the organisation.
165+ customer organizations breached via identity-based attacks; $2.7M extorted; AT&T disclosed in July 2024
1 May 2024
Critical1 May 2024
DentaQuest
Healthcare · 15,000,000 records
Cybersecurity incident in May 2024 affecting 15 million+ individuals at dental benefits administrator
1 May 2024
Critical1 May 2024
Canvas (Instructure)
Education · 275,000,000 records
ShinyHunters claimed breach exposing data of approximately 275 million users on educational platform
1 May 2024
Critical1 May 2024
LendingTree
Finance · Records not stated
Customer data exposed through Snowflake vulnerability affecting largest data breaches ever
1 May 2024
Critical1 May 2024
Advanced Auto Parts
Retail · Records not stated
Customer data exposed through Snowflake vulnerability affecting largest data breaches ever
1 May 2024
Critical1 May 2024
Snowflake Customers (165 organizations)
Technology · 165,000,000 records
UNC5537 targeted 165 Snowflake customers including Advanced Auto Parts and LendingTree; extortionists obtained $2.7M
1 May 2024
Critical1 May 2024
Snowflake customers
Technology · 165,000,000 records
165 Snowflake customers' data breached via identity-based attacks; UNC5537 extortion campaign
1 May 2024
High30 Apr 2024
MovieBoxPro
Technology · 6,009,014 records
6,009,014 records exposed, Email addresses, Usernames
30 Apr 2024
Critical28 Apr 2024
London Drugs (BC)
Retail · Records not stated
Ransomware shut down 79 stores for a week across Western Canada
28 Apr 2024
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