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.
5,314
Disclosures in the tracker, all years
2,028
Of those, indexed in 2026
76
Added in October
21
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 21 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
High4 Dec 2018
Technic
Retail · 265,410 records
265,410 records exposed, Chat logs, Email addresses, IP addresses, Passwords and 2 more
4 Dec 2018
Critical1 Dec 2018
Meta
Technology · Records not stated
2018 breach, fined €251 million by EU privacy regulator for privacy violations
1 Dec 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
Critical30 Nov 2018
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
339M guest records worldwide, UK ICO fined Marriott 18.4M GBP
30 Nov 2018
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