Disclosure tracker › Disclosures in 2025
Intelligence · Disclosure tracker
Disclosures in 2025
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.
5,276
Disclosures in the tracker, all years
1,990
Of those, indexed in 2026
39
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 15 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
980 results · Disclosures in 2025. Clear filters
Critical1 Oct 2025
Toppan Next Tech
Technology · Records not stated
Print vendor breach exposed supply chain risks affecting Singapore Police Force and major banks
1 Oct 2025
Critical1 Oct 2025
Blue Cross-Blue Shield
Healthcare · Records not stated
Massive data breach; lawsuit alleges company knew but delayed reporting
1 Oct 2025
Critical1 Oct 2025
Canadian Tire
Retail · 38,000,000 records
October 2025 breach exposed data from 38 million customer accounts including contact details and encrypted passwords
1 Oct 2025
Critical1 Oct 2025
Dublin Airport
Sector not stated · Records not stated
Everest ransomware group claimed theft of 1.5 million passenger records
1 Oct 2025
High1 Oct 2025
Capita
Technology · Records not stated
Data security breach resulting in £14 million fine from ICO for GDPR infringements
1 Oct 2025
Critical1 Oct 2025
Canadian Tire
Retail · 38,000,000 records
Data breach exposed personal information of 38 million customer accounts including contact details and encrypted passwords
1 Oct 2025
High1 Oct 2025
Capita
Technology · Records not stated
Data breach resulting in £14 million ICO fine for infringements of UK General Data Protection regulations
1 Oct 2025
Critical1 Oct 2025
Qantas
Sector not stated · 5,000,000 records
Hackers leaked 5 million customer records after ransom deadline passed; part of larger 40-company attack
1 Oct 2025
Critical1 Oct 2025
Blue Cross Blue Shield
Finance · Records not stated
Massive data breach with allegations company knew about it but delayed reporting; Montana investigation
1 Oct 2025
High1 Oct 2025
Mango Fashion Retailer
Retail · Records not stated
Spanish fast-fashion retailer's external marketing service provider suffered breach exposing limited customer information
1 Oct 2025
Critical1 Oct 2025
Canadian Tire
Retail · 38,000,000 records
October 2025 data breach affected 38 million customer accounts with personal and payment information
1 Oct 2025
Critical1 Oct 2025
Gmail/Google
Technology · 183,000,000 records
183 million email passwords exposed including millions of Gmail accounts through infostealer malware
1 Oct 2025
Critical1 Oct 2025
Toppan Next Tech
Technology · Records not stated
Breach affecting Singapore Police Force, DBS Bank, Bank of China, and Elections Commission
1 Oct 2025
Medium1 Oct 2025
Mango
Retail · Records not stated
External marketing service provider suffered breach exposing limited customer information
1 Oct 2025
Critical1 Oct 2025
Canadian Tire
Retail · 38,000,000 records
38 million customer accounts compromised in October 2025; contact details and encrypted passwords stolen
1 Oct 2025
Critical1 Oct 2025
Salesforce
Technology · 1,000,000,000 records
Hacking group claimed theft of 1 billion records from Salesforce customer databases
1 Oct 2025
Critical1 Oct 2025
Qantas
Sector not stated · 5,000,000 records
5 million customer records leaked after ransom deadline passed
1 Oct 2025
Critical1 Oct 2025
Blue Cross Blue Shield
Healthcare · Records not stated
Massive data breach affecting state's largest health insurance provider
1 Oct 2025
Critical1 Oct 2025
Canadian Tire
Retail · 38,000,000 records
38 million customer accounts breached; personal data, contact details, and encrypted passwords exposed in October 2025
1 Oct 2025
Critical1 Oct 2025
Salesforce
Technology · 1,000,000,000 records
Hacking group claims theft of 1 billion records from customer databases
1 Oct 2025
High1 Oct 2025
Qantas Airways
Sector not stated · Records not stated
Personal data of customers leaked online after being stolen in July 2025 cyberattack
1 Oct 2025
High1 Oct 2025
Capita
Sector not stated · Records not stated
Data breach resulting in £14 million fine from UK ICO for GDPR infringements
1 Oct 2025
High1 Oct 2025
Vietnam Airlines
Sector not stated · Records not stated
Data breach linked to global cyberattack affecting major companies including Qantas
1 Oct 2025
Critical1 Oct 2025
Qantas
Sector not stated · 5,000,000 records
5 million customer records leaked by Scattered Lapsus$ Hunters after ransom deadline passed
1 Oct 2025
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