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Ransomware Victim Professional Services

Clark Hill

Ransomware attack by Silentransomgroup · Disclosed September 22, 2026 · 🇺🇸 United States

Date Disclosed
Sep 22, 2026
2026
Threat Group
Silentransomgroup
155 total victims
Country
🇺🇸 United States
Industry
Professional Services

ThreatAI Analysis

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

Clark Hill appeared on Silentransomgroup's dark web leak site on 22 September 2026; the Professional Services firm is based in United States.

About the Silentransomgroup group

a former Conti team Silentransomgroup has listed 145 victims since June 2022.

Incident Analysis

Clark Hill was targeted by Silentransomgroup ransomware, one of the most active ransomware groups in our database with 155 confirmed victims globally. The attack was disclosed on September 22, 2026, when Clark Hill appeared on the group's dark web leak site.

Clark Hill is based in United States , operating in the Professional Services sector. United States ranks #1 globally for ransomware attacks, with 9,613 victims in our database.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

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 — 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 29, 2026 16:00 UTC.

Frequently Asked Questions

Was Clark Hill attacked by ransomware?

Yes. Clark Hill was listed as a victim of the Silentransomgroup ransomware group on September 22, 2026. The organisation is based in United States and operates in the Professional Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Clark Hill?

Clark Hill was attacked by Silentransomgroup ransomware. Silentransomgroup is one of the most active ransomware groups, having claimed 155 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Clark Hill ransomware attack occur?

The ransomware attack on Clark Hill was disclosed on September 22, 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 Clark Hill ransomware attack?

The specific data stolen from Clark Hill 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 Professional Services organisation, Clark Hill 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.