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Ransomware Victim Business Services

Cox, Castle & Nicholson LLP

Ransomware attack by Silentransomgroup ยท Disclosed April 9, 2026 ยท ๐Ÿ‡บ๐Ÿ‡ธ United States

coxcastle.com

Date Disclosed
Apr 9, 2026
2026
Threat Group
Silentransomgroup
118 total victims
Country
๐Ÿ‡บ๐Ÿ‡ธ United States
Industry
Business Services

Incident Analysis

Cox, Castle & Nicholson LLP was targeted by Silentransomgroup ransomware, one of the most active ransomware groups in our database with 118 confirmed victims globally. The attack was disclosed on April 9, 2026, when Cox, Castle & Nicholson LLP appeared on the group's dark web leak site.

Cox, Castle & Nicholson LLP is based in United States , operating in the Business Services sector. United States ranks #1 globally for ransomware attacks, with 9,007 victims in our database.

Sector context: Business services firms often have access to multiple client environments, making them high-value pivot points for ransomware operators seeking to maximise impact across multiple victim organisations.

Silentransomgroup 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 โ€” 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: Aug 5, 2026 16:00 UTC.

Frequently Asked Questions

Was Cox, Castle & Nicholson LLP attacked by ransomware?

Yes. Cox, Castle & Nicholson LLP was listed as a victim of the Silentransomgroup ransomware group on April 9, 2026. The organisation is based in United States and operates in the Business Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Cox, Castle & Nicholson LLP?

Cox, Castle & Nicholson LLP was attacked by Silentransomgroup ransomware. Silentransomgroup is one of the most active ransomware groups, having claimed 118 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Cox, Castle & Nicholson LLP ransomware attack occur?

The ransomware attack on Cox, Castle & Nicholson LLP was disclosed on April 9, 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 Cox, Castle & Nicholson LLP ransomware attack?

The specific data stolen from Cox, Castle & Nicholson LLP 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 Business Services organisation, Cox, Castle & Nicholson LLP likely held sensitive business data, client information, and operational records.

How can organisations protect against Silentransomgroup attacks?

To defend against Silentransomgroup 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.