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.
5,341
Disclosures in the tracker, all years
2,054
Of those, indexed in 2026
111
Added in October
14
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 26 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.
74 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.
- Canada23 Oct 2026Crime Stoppers programs in OntarioHow they got in: a supplier or vendor that was compromised first.Global News
- Canada22 Oct 2026Toronto Crime StoppersHow they got in: a supplier or vendor that was compromised first.Global News
- Canada21 Oct 2026Canadian Crime Stoppers AssociationHow they got in: a supplier or vendor that was compromised first.CBC News
- Canada17 Oct 2026More RewardsThe source does not say how they got in.CTV News
- Canada16 Oct 2026McMurray MétisHow they got in: email made to look like it came from a trusted sender.Yahoo News Canada
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach affected 62.2 million individuals; personal information compromised including financial data
1 Jan 2025
High1 Jan 2025
Otelier
Sector not stated · Records not stated
Personal information of approximately 500,000 hotel guests exposed after platform breach affecting major hotel chains
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Technology · 62,200,000 records
62.2 million individuals affected in printing and mailing services vendor breach
1 Jan 2025
High1 Jan 2025
Otelier
Retail · Records not stated
Hotel booking platform breach exposed personal data of half a million hotel guests from major chains
1 Jan 2025
Critical1 Jan 2025
Cerner
Healthcare · Records not stated
Hackers accessed electronic health records stored on legacy network in January; patients notified months later
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach exposed personal information of 62.2 million individuals through printing and mailing vendor services
1 Jan 2025
High1 Jan 2025
Otelier (Hotel Platform)
Sector not stated · Records not stated
Personal information of 500,000+ hotel guests compromised from major hotel chains after threat actor attack
1 Jan 2025
High1 Jan 2025
TalkTalk
Technology · Records not stated
Data breach with hacker claims of customer data theft
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Data breach affected 62.2 million individuals; January 2025 discovery of printing/mailing vendor breach
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
62.2 million individuals affected; vendor providing printing, mailing services
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
Massive breach affecting 62.2 million individuals through printing/mailing vendor services
1 Jan 2025
High1 Jan 2025
Otelier
Retail · Records not stated
Personal information of approximately 500,000 hotel guests from major hotel chains compromised
1 Jan 2025
High1 Jan 2025
Marquis
Sector not stated · 672,000 records
Ransomware gang stole data of 672,000 people in cyberattack
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
January 2025 breach affected 62.2 million individuals; vendor provides printing and mailing services
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Sector not stated · 62,200,000 records
62.2 million individuals affected in ransomware breach of government contractor
1 Jan 2025
Critical1 Jan 2025
Otelier
Retail · Records not stated
Breach exposing data on half a million hotel guests from major hotel chains
1 Jan 2025
Critical1 Jan 2025
Conduent Business Services
Healthcare · 62,200,000 records
62.2 million records breached, third-largest US healthcare hack ever
1 Jan 2025
High1 Jan 2025
Huntsville Hospital
Healthcare · Records not stated
Patient data compromised through third-party vendor breach, exposing health information
1 Jan 2025
High1 Jan 2025
Klaviyo
Technology · Records not stated
Marketing tech platform inadvertently shared user sign-up information including passwords to advertisers
1 Jan 2025
Critical1 Jan 2025
Otelier (Hotel Management)
Retail · Records not stated
500,000 hotel guests' personal information exposed
1 Jan 2025
High1 Jan 2025
Stiiizy
Retail · Records not stated
380,000 consumers' personal information stolen from vendor
1 Jan 2025
High1 Jan 2025
Organisation not named
Government · Records not stated
The disclosure as indexed does not name the organisation.
Heat-and-power facility breached via private APN, supplies heat to ~50,000 residents
1 Jan 2025
High1 Jan 2025
Water utilities (12 states)
Government · Records not stated
Cyberattacks on operational technology across South Dakota, Georgia and 10 other states
1 Jan 2025
High1 Jan 2025
IEH Corporation
Government · Records not stated
Military device manufacturer cyber incident disclosed to SEC affecting satellite/missile/fighter jet components
1 Jan 2025
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