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Ransomware Victim Professional Services

Mayer Brown

Ransomware attack by Silentransomgroup · Disclosed August 7, 2026 · 🇺🇸 United States

Date Disclosed
Aug 7, 2026
2026
Threat Group
Silentransomgroup
145 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.

Silentransomgroup listed Mayer Brown on its dark web leak site on 7 August 2026. Mayer Brown is a globally positioned law firm advising world leaders.

About Mayer Brown

Mayer Brown is a distinctively global law firm, uniquely positioned to advise the world's leading comp…

Source record: ransomware.live

About the Silentransomgroup group

a former Conti team Silentransomgroup has listed 119 victims since June 2022.

Incident Analysis

Mayer Brown was targeted by Silentransomgroup ransomware, one of the most active ransomware groups in our database with 145 confirmed victims globally. The attack was disclosed on August 7, 2026, when Mayer Brown appeared on the group's dark web leak site.

Mayer Brown is based in United States , operating in the Professional Services sector. United States ranks #1 globally for ransomware attacks, with 9,442 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 8, 2026 10:00 UTC.

Frequently Asked Questions

Was Mayer Brown attacked by ransomware?

Yes. Mayer Brown was listed as a victim of the Silentransomgroup ransomware group on August 7, 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 Mayer Brown?

Mayer Brown was attacked by Silentransomgroup ransomware. Silentransomgroup is one of the most active ransomware groups, having claimed 145 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Mayer Brown ransomware attack occur?

The ransomware attack on Mayer Brown was disclosed on August 7, 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 Mayer Brown ransomware attack?

The specific data stolen from Mayer Brown 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, Mayer Brown 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.