Disclosure context

About Killsecurity

Killsecurity is a relatively new ransomware group that emerged in March 2024, operating with apparent financial motivations and demonstrating rapid expansion in their victim targeting. The group's origin and affiliations remain unclear due to limited public documentation from major threat intelligence sources, though their global targeting pattern suggests a sophisticated operation. Based on available victim data, Killsecurity has compromised 276 organizations primarily across the United States, India, United Kingdom, Brazil, and Belgium, with a particular focus on healthcare, technology, business services, and financial sectors. The group's attack methodology, encryption techniques, and specific tools remain undocumented in public threat intelligence reports from established security firms. Notable campaigns and high-profile victims have not been extensively documented by major cybersecurity organizations or law enforcement agencies, likely due to the group's recent emergence. Killsecurity appears to remain active as of current reporting, though comprehensive analysis of their operations is limited by the lack of detailed technical documentation from reputable threat intelligence sources. The group has been linked to 277 public disclosures across our corpus. First observed on a leak site on March 21, 2024; most recent post May 15, 2026. The operation is currently active.

Timeline of this disclosure

March 14, 2026NextCapitalTrust listed by Killsecurityon 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.

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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NextCapitalTrust

Claimed by Killsecurity · listed 2 months ago

Age

since listed · data leaked

Status timeline

Listed
Mar 14, 2026
Data leaked

At a glance

Group: Killsecurity
Status: Data leaked
Sector: Financial Services
Listed on leak site: Mar 14, 2026

About the victim

AI dossier — public-source company profile

NextCapitalTrust appears to be a financial services firm, likely operating in capital management, trust services, or investment advisory based on its name. No verifiable public website or additional company details could be confirmed, as the listed domain is a placeholder. Its country of operation and scale remain unknown.

Industry: Financial Services & Capital Management

Attack summary

Severity: medium — The disclosed status is listed as data_published, which implies some data has been released, but the leak post provides no specifics on data type, volume, or sensitivity. Financial sector targeting raises inherent risk, but without evidence of regulated PII, financial records, or operational disruption, medium is appropriate.

Killsecurity claims a disclosure event against NextCapitalTrust with data published status indicated, though the leak post contains minimal detail — no specific data types, volumes, or attack methods are described beyond a partial disclosure indicator (0/1).

medium

What the group claims

Price ??? Disclosures 0/1

Sources

Victim siteexample.com

Source

Indexed 2 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.