Cyber Threat Intelligence
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Ransomware Victim Financial Services

cashcowboy

Ransomware attack by Killsec · Disclosed July 23, 2026 · 🇺🇸 United States

cashcowboy.net

Date Disclosed
Jul 23, 2026
2026
Threat Group
Killsec
286 total victims
Country
🇺🇸 United States
Industry
Financial Services

ThreatAI Analysis

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

About the Killsec group

KillSec originated as a hacktivist group aligned with the Anonymous movement before pivoting to ransomware operations in October 2023, officially launching a RaaS platform in June 2024 with an affiliate-friendly 88% revenue split, primarily targeting healthcare, financial services, and government sectors with over 250 documented victims as of late 2025. Killsec has listed 285 victims since February 2024.

Incident Analysis

cashcowboy was targeted by Killsec ransomware, one of the most active ransomware groups in our database with 286 confirmed victims globally. The attack was disclosed on July 23, 2026, when cashcowboy appeared on the group's dark web leak site.

cashcowboy is based in United States , operating in the Financial Services sector. United States ranks #1 globally for ransomware attacks, with 9,526 victims in our database.

Sector context: Financial sector organisations are targeted for their access to funds, sensitive financial data, and the reputational damage a public breach can cause. Regulatory requirements also increase recovery costs.

Killsec 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 18, 2026 12:00 UTC.

Frequently Asked Questions

Was cashcowboy attacked by ransomware?

Yes. cashcowboy was listed as a victim of the Killsec ransomware group on July 23, 2026. The organisation is based in United States and operates in the Financial Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked cashcowboy?

cashcowboy was attacked by Killsec ransomware. Killsec is one of the most active ransomware groups, having claimed 286 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the cashcowboy ransomware attack occur?

The ransomware attack on cashcowboy was disclosed on July 23, 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 cashcowboy ransomware attack?

The specific data stolen from cashcowboy 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. As a Financial Services organisation, cashcowboy likely held financial records, client data, and transaction histories.

How can organisations protect against Killsec attacks?

To defend against Killsec 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.