Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
TH
Ransomware Victim Construction

The Gisborne Group

Ransomware attack by Worldleaks · Disclosed August 7, 2025 · 🇨🇦 Canada

www.gisborne.com

Date Disclosed
Aug 7, 2025
2025
Threat Group
Worldleaks
177 total victims
Country
🇨🇦 Canada
Industry
Construction

ThreatAI Analysis

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

About the Worldleaks group

World Leaks emerged in January 2025 as a rebrand of the Hunters International ransomware operation, shifting its focus from file encryption to solely stealing sensitive data and threatening to leak it unless a ransom is paid Worldleaks has listed 174 victims since June 2022.

Incident Analysis

The Gisborne Group was targeted by Worldleaks ransomware, one of the most active ransomware groups in our database with 177 confirmed victims globally. The attack was disclosed on August 7, 2025, when The Gisborne Group appeared on the group's dark web leak site.

The Gisborne Group is based in Canada , operating in the Construction sector. Canada ranks #3 globally for ransomware attacks, with 921 victims in our 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.

Worldleaks 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 21, 2026 04:00 UTC.

Frequently Asked Questions

Was The Gisborne Group attacked by ransomware?

Yes. The Gisborne Group was listed as a victim of the Worldleaks ransomware group on August 7, 2025. The organisation is based in Canada and operates in the Construction sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked The Gisborne Group?

The Gisborne Group was attacked by Worldleaks ransomware. Worldleaks is one of the most active ransomware groups, having claimed 177 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the The Gisborne Group ransomware attack occur?

The ransomware attack on The Gisborne Group was disclosed on August 7, 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 The Gisborne Group ransomware attack?

The specific data stolen from The Gisborne Group 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, The Gisborne Group likely held sensitive business data, client information, and operational records.

How can organisations protect against Worldleaks attacks?

To defend against Worldleaks 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.