Disclosure context

About d4rk4rmy

d4rk4rmy is a recently emerged ransomware group that was first observed in July 2025, operating with apparent financial motivations based on their targeting of high-value sectors including financial services and technology organizations. With only 18 documented victims to date, the group appears to be in its early operational phase, demonstrating a geographically diverse targeting approach across the United States, Taiwan, Brazil, Poland, and Monaco, with particular focus on financially lucrative sectors such as financial services, technology, transportation and logistics, and hospitality and tourism industries. Given the group's recent emergence and limited public documentation from established threat intelligence sources, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they operate as a Ransomware-as-a-Service model remain largely undetermined by major cybersecurity organizations such as CISA, FBI, or prominent security research firms. The group's current operational status appears active based on the recent timeline of their emergence, though comprehensive analysis of their capabilities, notable campaigns, and potential law enforcement actions is limited due to insufficient publicly available intelligence from authoritative sources. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on July 7, 2025; most recent post August 16, 2025. The operation is currently inactive.

Timeline of this disclosure

August 7, 2025TSAI CAPITAL listed by d4rk4rmyon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 516 disclosures indexed across all operators we track. Geographically, TSAI CAPITAL 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

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TSAI CAPITAL

Claimed by d4rk4rmy · listed 10 months ago

Age

since listed · data leaked

Status timeline

Listed
Aug 7, 2025
Data leaked

At a glance

Group: d4rk4rmy
Status: Data leaked
Country: United States
Sector: Financial Services
Listed on leak site: Aug 7, 2025

About the victim

AI dossier — public-source company profile

Tsai Capital is an investment management firm focused on capital preservation and long-term growth for select families and organizations. Led by Christopher Tsai, President and Chief Investment Officer, the firm has more than two decades of experience and is positioned as a third-generation investment operation.

Industry: Investment Management & Wealth Management

Attack summary

Severity: medium — Data has been published by the threat actor (disclosed status confirmed), but the leak post excerpt provides no detail on data type, volume, or sensitivity. For a financial services firm handling client portfolios and family wealth, presumed exposure of business/client records warrants medium severity absent proof inventory details.

The d4rk4rmy group claims to have attacked Tsai Capital and published data. No specific details about encryption, exfiltration method, or data categories are provided in the available post excerpt.

medium

What the group claims

https://tsaicapital.com Tsai Capital™ is an investment management firm focused on the preservation and long-term growth of capital on behalf of select families and organizations. With more than two decades of experience, and as a third-generation investor whose financial roots date…

Sources

Victim sitetsaicapital.com

Source

Indexed 10 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.