Tridentlocker Ransomware
ActiveThreat actor group tracked in the global ransomware database · Last disclosure: Sep 4, 2026
ThreatAI Analysis
Compiled from the ransomware.live profile for Tridentlocker and from this database. Figures and technique mappings are quoted from the source data, not inferred.
Tridentlocker, a ransomware group behind 16 known attacks in seven countries including United States, UK, Canada and Asia, employs double extortion to target organizations handling regulated data.
Who Tridentlocker is
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.
Recorded activity
Disclosures attributed to Tridentlocker in this database run from November 2025 to September 2026, totalling 17 victims — 0.1% of everything tracked here. Tridentlocker has listed victims in 7 countries in this database, most often United States, followed by United Kingdom and Canada. The sectors appearing most in its listings are Technology, Business Services, Energy.
YARA detection rules
tridentlocker.yar
/*
tridentlocker ransomware
*/
rule tridentlocker_Ransomnote
{
meta:
author = "ransomware.live"
family = "ransomware.tridentlocker"
description = "Detects tridentlocker ransomware ransom note or artifact"
date = "2026-05-04"
severity = 7
score = 70
strings:
$name1 = "tridentlocker" ascii nocase
$name2 = "TRIDENTLOCKER" ascii
$onion = "tridentlocker.onion" ascii nocase
condition:
any of them
}
Community-contributed rules for Tridentlocker, reproduced as published. Test them against your own corpus before relying on them: rule quality and false-positive behaviour vary by author.
Threat Actor Analysis
Tridentlocker is a ransomware threat group that has disclosed 17 victims in publicly accessible leak site data, representing 0.1% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Tridentlocker in our dataset dates to November 2025.
Geographically, Tridentlocker has targeted organisations in 7 countries. The most frequently targeted nation is United States with 7 victim organisations. Other heavily targeted nations include United Kingdom, Canada, South Korea.
Industry-wise, Tridentlocker shows a concentration in the Technology, Business Services, Energy sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.
Like most modern ransomware operations, Tridentlocker likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.
Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The table below lists the 17 most recent of the 17 disclosures we hold for this group; use the link beneath it to page through all of them.
Recent Victim Disclosures (showing 17 of 17)
| # | Organization | Country | Sector | Date |
|---|---|---|---|---|
| 1 | SouthernCarlson | — | — | Sep 4, 2026 |
| 2 | RT Software rtsw.co.uk | 🇬🇧 United Kingdom | Technology | Apr 27, 2026 |
| 3 | Jameson Pepple Cantu PLLC jpclaw.com | 🇺🇸 United States | Business Services | Mar 5, 2026 |
| 4 | TMPartner tm-partner.ch | 🇯🇵 Japan | — | Feb 6, 2026 |
| 5 | Eco Green Group ecogreengroup.co.uk | 🇬🇧 United Kingdom | Energy | Jan 12, 2026 |
| 6 | Sedgwick Government Solutions sedgwickgovernment.com | 🇺🇸 United States | Public Sector | Dec 30, 2025 |
| 7 | allenprinting allenprinting.com | 🇺🇸 United States | Business Services | Dec 19, 2025 |
| 8 | noment noment.com | 🇺🇸 United States | — | Dec 2, 2025 |
| 9 | bpost bpost.be | 🇧🇪 Belgium | Telecommunication | Dec 1, 2025 |
| 10 | Advantage 360 advantage360.com | 🇺🇸 United States | Telecommunication | Nov 29, 2025 |
| 11 | asiawba asiawba.com | 🇰🇷 South Korea | — | Nov 29, 2025 |
| 12 | Calmec calmec.com | 🇨🇦 Canada | Manufacturing | Nov 29, 2025 |
| 13 | EnQuest enquest.com | 🇬🇧 United Kingdom | Energy | Nov 29, 2025 |
| 14 | GuestTek guesttek.com | 🇨🇦 Canada | Technology | Nov 29, 2025 |
| 15 | iqs | IQ | — | Nov 29, 2025 |
| 16 | LMG Holdings lmgholdings.com | 🇺🇸 United States | Manufacturing | Nov 29, 2025 |
| 17 | typecaseinc typecaseinc.com | 🇺🇸 United States | — | Nov 29, 2025 |
Frequently Asked Questions
What is Tridentlocker ransomware?
Tridentlocker is a ransomware threat group that has claimed 17 victims since its first known activity in November 2025. The group operates by infiltrating target networks, exfiltrating data, encrypting files, and threatening to publish stolen data on a dark web leak site if the ransom is not paid.
How many victims has Tridentlocker attacked?
Tridentlocker has claimed 17 victims in our database, representing 0.1% of all tracked ransomware attacks. The most targeted countries are United States, United Kingdom, Canada, South Korea.
Which countries does Tridentlocker target?
Tridentlocker has attacked organizations in 7 countries. The top targeted countries are: United States, United Kingdom, Canada, South Korea.
Which industries does Tridentlocker target?
Tridentlocker most frequently targets the Technology, Business Services, Energy sectors based on victim disclosures in our database.
Is Tridentlocker still active?
Tridentlocker's most recent victim disclosure in our database was on September 4, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.