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Ransomware Victim Construction

optiline.com

Ransomware attack by Cactus Β· Disclosed March 21, 2025 Β· πŸ‡ͺπŸ‡ͺ Estonia

optiline.com

Date Disclosed
Mar 21, 2025
2025
Threat Group
Cactus
53 total victims
Country
πŸ‡ͺπŸ‡ͺ Estonia
Industry
Construction

Incident Analysis

optiline.com was targeted by Cactus ransomware, one of the most active ransomware groups in our database with 53 confirmed victims globally. The attack was disclosed on March 21, 2025, when optiline.com appeared on the group's dark web leak site.

optiline.com is based in Estonia , operating in the Construction sector. Estonia ranks #99 globally for ransomware attacks, with 4 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.

Cactus 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 β€” 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: Jun 10, 2026 06:09 UTC.

Frequently Asked Questions

Was optiline.com attacked by ransomware?

Yes. optiline.com was listed as a victim of the Cactus ransomware group on March 21, 2025. The organisation is based in Estonia and operates in the Construction sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked optiline.com?

optiline.com was attacked by Cactus ransomware. Cactus is one of the most active ransomware groups, having claimed 53 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the optiline.com ransomware attack occur?

The ransomware attack on optiline.com was disclosed on March 21, 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 optiline.com ransomware attack?

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

How can organisations protect against Cactus attacks?

To defend against Cactus 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.