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.
5,273
Disclosures in the tracker, all years
1,986
Of those, indexed in 2026
29
Added in October
15
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 11 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
Critical2 Mar 2021
Oxfam
Finance · 1,834,006 records
1,834,006 records exposed, Bank account numbers, Dates of birth, Email addresses, Genders and 5 more
2 Mar 2021
High2 Mar 2021
Microsoft Exchange zero-day exploited, European banking regulator compromised
Finance · Records not stated
Microsoft Exchange zero-day exploited, European banking regulator compromised
2 Mar 2021
Medium2 Mar 2021
2 Mar 2021
Critical2 Mar 2021
Multiple federal agencies
Government · Records not stated
Multiple federal agencies breached via Hafnium Exchange zero-days
2 Mar 2021
Critical2 Mar 2021
Microsoft Exchange Server (Hafnium)
Technology · Records not stated
250K+ Exchange servers exploited globally via ProxyLogon zero-days
2 Mar 2021
Critical1 Mar 2021
Ticketcounter
Finance · 1,921,722 records
1,921,722 records exposed, Bank account numbers, Dates of birth, Email addresses, Genders and 5 more
1 Mar 2021
Critical1 Mar 2021
Universal Health Services (2021)
Healthcare · Records not stated
UHS reported $67M in losses from 2020 Ryuk ransomware
1 Mar 2021
Medium1 Mar 2021
1 Mar 2021
High1 Mar 2021
1 Mar 2021
Critical28 Feb 2021
SuperVPN & GeckoVPN
Technology · 20,339,937 records
20,339,937 records exposed, Device information, Device serial numbers, Email addresses, Geographic locations and 2 more
28 Feb 2021
High27 Feb 2021
Campbell Conroy & O'Neil
Legal · Records not stated
Ransomware hit law firm serving Fortune 500 clients
27 Feb 2021
Critical24 Feb 2021
SITA (Global Aviation)
Sector not stated · Records not stated
Aviation IT provider breach exposed passenger data of 40+ airlines worldwide
24 Feb 2021
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