TridentLocker
No sourced public emblem in this profile.
reference profile · reported nexus: Unknown (not nationality)
TridentLocker is a ransomware group known for targeting organizations that manage high volumes of regulated or third-party data, including government services and telecom providers. They have claimed breaches of multiple victims, such as TMPartner, Sedgwick, and Advantage 360, often exfiltrating sensitive data before deploying ransomware. The group employs techniques such as stolen credentials, phishing, and exploitation of unpatched software to gain initial access and move laterally within networks. Their operations are characterized by high visibility postings on their leak portal, which include detailed victim profiles and countdown timers to create public pressure.
Source-reported aliases: . Associations do not prove equivalence.
Target geography
Catalog-listed countries (associations, not attack counts): No country-level metadata
12 observed public claim posts in the collection window 2025-11-21 through 2026-10-25. Accumulated bounded samples: newest 1,000 records from each of the current and previous source years, refreshed every six hours. Historical gaps are not filled. These are not confirmed attacks or unique victims. Dates are provider record dates; countries are provider classifications; unknown is retained. Source: Ransomfeed — Dario Fadda · CC BY 4.0. Adapted into anonymous counts by Kinwilder; no endorsement implied.
United States of America: 6 posts
Canada: 2 posts
Belgium: 1 posts
United Kingdom: 1 posts
Hong Kong: 1 posts
South Korea: 1 posts
Historical casebook
No dated record curated yet; absence does not establish inactivity.
Planned Kinwilder coverage
Tentative editorial review windows, contingent on evidence and review; not promised publication dates or predictions of attacks.
No assigned review window.
References
https://therecord.media/sedgwick-cyber-incident-ransomware