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.
5,259
Disclosures in the tracker, all years
1,973
Of those, indexed in 2026
16
Added in October
14
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 8 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High14 Oct 2020
14 Oct 2020
High12 Oct 2020
Hackney Council (London)
Government · Records not stated
Pysa ransomware disrupted London borough council, resident data stolen
12 Oct 2020
Critical11 Oct 2020
Dental Care Alliance
Healthcare · 1,000,000 records
1M patient records compromised in unauthorized access
11 Oct 2020
High10 Oct 2020
10 Oct 2020
High10 Oct 2020
Barnes & Noble
Technology · Records not stated
Customer purchase data and email addresses exposed in breach
10 Oct 2020
High9 Oct 2020
Pennsylvania unemployment system
Government · Records not stated
650K claimant records exposed in data breach
9 Oct 2020
High7 Oct 2020
7 Oct 2020
Medium6 Oct 2020
Chowbus
Retail · 444,224 records
444,224 records exposed, Email addresses, Names, Phone numbers, Physical addresses
6 Oct 2020
Critical5 Oct 2020
WiziShop
Retail · 2,856,769 records
2,856,769 records exposed, Dates of birth, Email addresses, IP addresses, Names and 3 more
5 Oct 2020
High4 Oct 2020
Comprehensive Health Services
Healthcare · 170,000 records
170K patient records exposed in data breach
4 Oct 2020
High3 Oct 2020
Software AG
Sector not stated · Records not stated
Clop ransomware attacked enterprise software firm, $23M demand
3 Oct 2020
Critical1 Oct 2020
Broadvoice
Technology · Records not stated
350M call records including voicemail transcripts exposed
1 Oct 2020
Critical1 Oct 2020
Community Health Systems (2020)
Healthcare · 28,500,000 records
28.5M patient records exposed across hospitals
1 Oct 2020
High1 Oct 2020
International Maritime Organization
Sector not stated · Records not stated
Cyberattack disrupted global shipping regulatory body
1 Oct 2020
Critical27 Sep 2020
Universal Health Services (UHS)
Healthcare · Records not stated
400 facilities affected by Ryuk ransomware, largest medical cyberattack in US history at the time
27 Sep 2020
Medium25 Sep 2020
ShopBack (Singapore)
Retail · 1,100,000 records
1.1M user records compromised from cashback shopping platform
25 Sep 2020
High25 Sep 2020
25 Sep 2020
High24 Sep 2020
24 Sep 2020
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