Disclosure context

About tridentlocker

TridentLocker is a recently emerged ransomware group that was first observed in November 2025, appearing to be financially motivated based on their targeting patterns across multiple high-value sectors. The group's origin and affiliations remain unclear given their recent emergence, with no publicly documented connections to other ransomware operations or confirmed country of origin, though their global targeting suggests they may operate independently rather than as part of an established RaaS model. Limited public documentation exists regarding their specific attack methodology, tools, or encryption methods, though their targeting of technology, public sector, energy, and telecommunication organizations suggests they likely employ sophisticated initial access techniques and may utilize double extortion tactics given the sensitive nature of data in these sectors. With only 15 documented victims across the United States, Canada, Japan, Iraq, and Great Britain, the group has not yet conducted any widely publicized major campaigns or attracted significant law enforcement attention. TridentLocker appears to remain active as of their recent emergence, though comprehensive threat intelligence remains limited due to their brief operational history. The group has been linked to 16 public disclosures across our corpus. First observed on a leak site on November 29, 2025; most recent post April 27, 2026. The operation is currently active.

Timeline of this disclosure

December 19, 2025allenprinting listed by tridentlockeron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, allenprinting is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

← All victims

Allen Printing

listed as allenprinting · Claimed by tridentlocker · listed 5 months ago

Age

since listed · data leaked

Status timeline

Listed
Dec 19, 2025
Data leaked

At a glance

Group: tridentlocker
Status: Data leaked
Country: United States
Sector: Not Found
Listed on leak site: Dec 19, 2025

About the victim

AI dossier — public-source company profile

Allen Printing is a commercial printing company based in the United States. The company name suggests it operates in the printing and graphic communications sector. No additional details are available from a public site excerpt.

Industry: Commercial Printing

Attack summary

Severity: high — Data has been confirmed published (disclosed status: data_published) with a substantial 88.28 GB of exfiltrated data, indicating significant business data exposure even absent specific content details.

TridentLocker claims to have exfiltrated 88.28 GB of data from Allen Printing, with the data published on or around 19 December 2025 as part of the group's leak site disclosures.

high

Data the group says was taken

AI dossier — extracted from the leak post

Exfiltrated company files (88.28 GB)

Original description

AI-summarised, not from the leak post

Allen Printing is a Nashville-based company that offers commercial printing and direct mail services. They have been in business for over 80 years, providing a variety of services including digital printing, offset printing, bindery, and graphic design. Their clientele ranges from local businesses to renowned corporations. They pride themselves on their quality, service, and timely delivery.

The leak post

captured from the group's site

TridentLocker TridentLocker asiawba Leak date 9.11.2025 Total leak size: 2.7 GB typecaseinc Leak date 15.11.2025 Total leak size: 184.55 GB Calmec Leak date 15.11.2025 Total leak size: 73.91 GB EnQuest Leak date 16.11.2025 Total leak size: 177.44 GB LMG Holdings Leak date 18.11.2025 Total leak size: 27.28 GB iqs Leak date 18.11.2025 Total leak size: 312.77 GB Advantage 360 Leak date 20.11.2025 Total leak size: 73.54 GB GuestTek Leak date 20.11.2025 Total leak size: 126.98 GB bpost Leak date 01.12.2025 Total leak size: 30.46 GB noment Leak date 02.12.2025 Total leak size: 30.9 GB allenprinting Leak date 19.12.2025 Total leak size: 88.28 GB Sedgwick Government Solutions Leak date 30.12.2025 Total leak size: 3.39 GB Eco Green Group Leak date 12.01.2026 Total leak size: 122.5 GB TMPartner Leak date 06.02.2026 Total leak size: 2.8 GB Jameson Pepple Cantu PLLC Leak date 05.03.2026 Total leak size: 178.05 GB RT Software Leak date 26.04.2026 Total leak size: 402.14 GB &times; Edit Article Target: Date: Size: File Count: Archives: Save Changes

Sources

Leak posthttp://tridentfrdy6jydwywfx4vx422vnto7pktao2gyx2qdcwjanogq454ad.onion/article/207a35f0-2fa8-414d-947e-97e09b76cb17

Source

Indexed 5 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.