Cyber Threat Intelligence
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Ransomware Victim

TMPartner

Ransomware attack by Tridentlocker · Disclosed February 6, 2026 · 🇯🇵 Japan

tm-partner.ch

Date Disclosed
Feb 6, 2026
2026
Threat Group
Tridentlocker
17 total victims
Country
🇯🇵 Japan
Industry
—

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Tridentlocker. Figures and technique mappings are quoted from the source data, not inferred.

About the Tridentlocker group

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. Tridentlocker has listed 16 victims since October 2025.

Incident Analysis

TMPartner was targeted by Tridentlocker ransomware, one of the most active ransomware groups in our database with 17 confirmed victims globally. The attack was disclosed on February 6, 2026, when TMPartner appeared on the group's dark web leak site.

TMPartner is based in Japan . Japan ranks #11 globally for ransomware attacks, with 266 victims in our database.

Tridentlocker typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 5, 2026 20:00 UTC.

Frequently Asked Questions

Was TMPartner attacked by ransomware?

Yes. TMPartner was listed as a victim of the Tridentlocker ransomware group on February 6, 2026. The organisation is based in Japan. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked TMPartner?

TMPartner was attacked by Tridentlocker ransomware. Tridentlocker is one of the most active ransomware groups, having claimed 17 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the TMPartner ransomware attack occur?

The ransomware attack on TMPartner was disclosed on February 6, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the TMPartner ransomware attack?

The specific data stolen from TMPartner has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. Sensitive business data was likely targeted.

How can organisations protect against Tridentlocker attacks?

To defend against Tridentlocker and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.