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Hogan Lovells Cadwalader

Ransomware attack by Silentransomgroup · Disclosed September 21, 2026

Date Disclosed
Sep 21, 2026
2026
Threat Group
Silentransomgroup
155 total victims
Country
Unknown
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.

Silentransomgroup listed law firm Hogan Lovells Cadwalader on its dark web leak site on 21 September 2026, operating in the Professional Services sector.

About the Silentransomgroup group

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

Incident Analysis

Hogan Lovells Cadwalader 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 21, 2026, when Hogan Lovells Cadwalader appeared on the group's dark web leak site.

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 Hogan Lovells Cadwalader attacked by ransomware?

Yes. Hogan Lovells Cadwalader was listed as a victim of the Silentransomgroup ransomware group on September 21, 2026 and operates in the Professional Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Hogan Lovells Cadwalader?

Hogan Lovells Cadwalader 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 Hogan Lovells Cadwalader ransomware attack occur?

The ransomware attack on Hogan Lovells Cadwalader was disclosed on September 21, 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 Hogan Lovells Cadwalader ransomware attack?

The specific data stolen from Hogan Lovells Cadwalader 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, Hogan Lovells Cadwalader 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.