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Cyber Threat
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Ransomware victim Construction

Soderstrom Architects, LTD

Listed by Ransomhouse on · organisation based in United States

www.sdra.com

Disclosed
Dec 1, 2025
Leak-site listing date
Threat group
Ransomhouse
159 victims listed
Country
United States
#1 most targeted
Sector
Construction

ThreatAI analysis

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

About the Ransomhouse group

RansomHouse is a double-extortion RaaS operation active since late 2021, attributed to the threat actor "Jolly Scorpius," targeting over 120 organizations across healthcare, finance, transportation, and government, recently upgrading to a multi-layered dual-key encryption architecture. Ransomhouse has listed 212 victims since June 2021.

Incident analysis

Soderstrom Architects, LTD was listed by Ransomhouse ransomware, a group with 159 victims recorded in this database. The listing appeared on the group's leak site on December 1, 2025.

Soderstrom Architects, LTD is based in United States and operates in the Construction sector. United States ranks #1 worldwide for ransomware disclosures, with 10,270 victims in this database.

Sector context. Construction firms often hold sensitive project data, client financials, and intellectual property. The industry's typically lean IT security teams can make them more vulnerable.

Ransomhouse typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was Soderstrom Architects, LTD attacked by ransomware?

Yes. Soderstrom Architects, LTD was listed as a victim of the Ransomhouse ransomware group on December 1, 2025. The organisation is based in United States and operates in the Construction sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Soderstrom Architects, LTD?

Soderstrom Architects, LTD was attacked by Ransomhouse ransomware. Ransomhouse is one of the most active ransomware groups, having claimed 159 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Soderstrom Architects, LTD ransomware attack occur?

The ransomware attack on Soderstrom Architects, LTD was disclosed on December 1, 2025. 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 Soderstrom Architects, LTD ransomware attack?

The specific data stolen from Soderstrom Architects, LTD 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 Construction organisation, Soderstrom Architects, LTD likely held sensitive business data, client information, and operational records.

How can organisations protect against Ransomhouse attacks?

To defend against Ransomhouse 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.