Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker
Disclosures in 2026
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.
5,278
Disclosures in the tracker, all years
1,991
Of those, indexed in 2026
37
Added in October
8
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 14 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,945 results · Disclosures in 2026. Clear filters
Medium1 Apr 2026
T-Mobile
Technology · Records not stated
Insider data breach incident with limited impact
1 Apr 2026
High1 Apr 2026
Heart South Cardiovascular Group
Healthcare · 46,666 records
Data breach affected 46,666 patients, exposing personal and health records
1 Apr 2026
High1 Apr 2026
CISA (US Government)
Government · Records not stated
US agency breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March
1 Apr 2026
Critical1 Apr 2026
Marquis Software Solutions
Finance · Records not stated
Ransomware attack exposed 788,000 financial records including names, addresses and card numbers
1 Apr 2026
High1 Apr 2026
CISA/US Government Agency
Government · Records not stated
Unnamed U.S. department breached through Cisco vulnerability; FIRESTARTER backdoor provided persistent access through March 2026
1 Apr 2026
Critical1 Apr 2026
CISA (US Agency)
Government · Records not stated
Unnamed US department breached via Cisco vulnerability, FIRESTARTER backdoor allowed persistent access
1 Apr 2026
High1 Apr 2026
Sandhills Medical Foundation
Healthcare · 170,000 records
Ransomware breach affecting 170,000 individuals in South Carolina
1 Apr 2026
High1 Apr 2026
Tribeca Film Festival
Sector not stated · 666,000 records
666,000 records including celebrity contact data exposed from unprotected database without password or encryption
1 Apr 2026
Critical1 Apr 2026
ANTS (France)
Government · 19,000,000 records
Cyberattack on French identity agency exposed 19 million records with personal data
1 Apr 2026
High1 Apr 2026
Cherry Creek School District
Education · Records not stated
Student data breach resulted in lawsuit against school district
1 Apr 2026
Critical1 Apr 2026
US Government Agency (CISA)
Government · Records not stated
Unnamed US agency breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March 2026
1 Apr 2026
Critical1 Apr 2026
Unnamed U.S. Department (CISA)
Government · Records not stated
Breached through Cisco vulnerability; FIRESTARTER backdoor allowed unauthorized access through March
1 Apr 2026
High1 Apr 2026
Huntsville Hospital Health System
Healthcare · Records not stated
Third-party data breach compromised patient information
1 Apr 2026
High1 Apr 2026
FirstClass
Retail · Records not stated
Australian travel agency customer records compromised; threat actor claimed data on underground hacking forums
1 Apr 2026
Critical1 Apr 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
ShinyHunters breached Rockstar Games via Snowflake; 165 organizations affected in supply chain attack
1 Apr 2026
Critical1 Apr 2026
Rockstar Games
Technology · Records not stated
Breach through compromised Anodot Snowflake access by ShinyHunters group; 165 organizations affected in cascading attack.
1 Apr 2026
Critical1 Apr 2026
CISA (US Cybersecurity Agency)
Government · Records not stated
Breached through Cisco vulnerability; FIRESTARTER backdoor allowed persistent access through March
1 Apr 2026
Critical1 Apr 2026
ANTS (French ID Agency)
Government · 19,000,000 records
Cyberattack exposed 19 million records linked to personal identity data
1 Apr 2026
High1 Apr 2026
Mexican Government Agencies
Government · Records not stated
Single hacker compromised 9 government agencies using Claude Code and OpenAI tools
1 Apr 2026
High1 Apr 2026
U.S. Government Agency (CISA)
Government · Records not stated
Unnamed federal agency breached via Cisco vulnerability; FIRESTARTER backdoor maintained access through March
1 Apr 2026
High1 Apr 2026
Legend Senior Care
Healthcare · Records not stated
Senior care provider affected by ransomware attack exposing patient data
1 Apr 2026
High1 Apr 2026
Windward Life Care
Healthcare · Records not stated
Senior care provider affected by ransomware attack exposing patient data
1 Apr 2026
High1 Apr 2026
South Florida Injury Centers
Healthcare · 1,525 records
1,525 individuals affected; SSNs and medical records exposed
1 Apr 2026
Critical1 Apr 2026
Fortinet
Technology · Records not stated
75,000 firewalls compromised exposing global enterprises
1 Apr 2026
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