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TridentLocker
As of Oct 19, 2026, TridentLocker has listed 17 confirmed victims on its leak site since Nov 9, 2025, 0.1% of all victims tracked by Brandefense. Its most targeted country is United States (47.1% of its victims) and its most targeted sector is Retail.
TridentLocker is a newly emerged ransomware group (surfaced mid-2025) targeting organizations managing high volumes of regulated or third-party data, including government services, telecom, and engineering firms, across the US, Canada, UK, and Asia using double-extortion tactics.
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- Confirmed Victims
- 17
- Rank By Victims
- #182
- Last Leak-Site Post
- Sep 4, 2026
- Top Country
- United States
- Top Sector
- Retail
Victims Posted Per Month.
| Month | Confirmed victims |
|---|---|
| May 2026 | 0 |
| June 2026 | 0 |
| July 2026 | 0 |
| August 2026 | 0 |
| September 2026 | 1 |
| October 2026 (month in progress) | 0 |
| Month | Confirmed victims |
|---|---|
| November 2025 | 8 |
| December 2025 | 4 |
| January 2026 | 1 |
| February 2026 | 1 |
| March 2026 | 1 |
| April 2026 | 1 |
| May 2026 | 0 |
| June 2026 | 0 |
| July 2026 | 0 |
| August 2026 | 0 |
| September 2026 | 1 |
| October 2026 (month in progress) | 0 |
| Month | Confirmed victims |
|---|---|
| November 2025 | 8 |
| December 2025 | 4 |
| January 2026 | 1 |
| February 2026 | 1 |
| March 2026 | 1 |
| April 2026 | 1 |
| May 2026 | 0 |
| June 2026 | 0 |
| July 2026 | 0 |
| August 2026 | 0 |
| September 2026 | 1 |
| October 2026 (month in progress) | 0 |
Latest TridentLocker Victims.
Search all 17 →| Victim | Country | Industry | Data claimed | Posted |
|---|---|---|---|---|
| SouthernCarlson southerncarlson.com | USUnited States | Retail | 64.16 GB | |
| RT Software rtsw.co.uk | GBUnited Kingdom | Retail | 402.14 GB | |
| Jameson Pepple Cantu PLLC jpclaw.com | USUnited States | Legal Services | 178.05 GB | |
| TMPartner tmpartners.no | Unknown | Unknown | 2.8 GB | |
| Eco Green Group ecogreengroup.co.uk | GBUnited Kingdom | Unknown | 122 GB | |
| Sedgwick Government Solutions sedgwickgovernment.com | USUnited States | Government and Public Sector | 3.39 GB |
How They Operate.
TridentLocker's threat actor profile lists 1 malware and tools, with its targets and related actors.
TTPs, CVEs and malware →Who TridentLocker Targets.
History.
Busiest month on record: 8 confirmed victims
First confirmed victim listed on its leak site
First seen in Brandefense data
Most recent leak-site post
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