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Ransomware Victim Government & Defense

jastrebarsko.hr

Ransomware attack by Threeam Β· Disclosed June 12, 2026 Β· πŸ‡­πŸ‡· Croatia

jastrebarsko.hr

Date Disclosed
Jun 12, 2026
2026
Threat Group
Threeam
70 total victims
Country
πŸ‡­πŸ‡· Croatia
Industry
Government & Defense

Incident Analysis

jastrebarsko.hr was targeted by Threeam ransomware, one of the most active ransomware groups in our database with 70 confirmed victims globally. The attack was disclosed on June 12, 2026, when jastrebarsko.hr appeared on the group's dark web leak site.

jastrebarsko.hr is based in Croatia , operating in the Government & Defense sector. Croatia ranks #51 globally for ransomware attacks, with 26 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.

Threeam 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: Aug 4, 2026 02:00 UTC.

Frequently Asked Questions

Was jastrebarsko.hr attacked by ransomware?

Yes. jastrebarsko.hr was listed as a victim of the Threeam ransomware group on June 12, 2026. The organisation is based in Croatia and operates in the Government & Defense sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked jastrebarsko.hr?

jastrebarsko.hr was attacked by Threeam ransomware. Threeam is one of the most active ransomware groups, having claimed 70 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the jastrebarsko.hr ransomware attack occur?

The ransomware attack on jastrebarsko.hr was disclosed on June 12, 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 jastrebarsko.hr ransomware attack?

The specific data stolen from jastrebarsko.hr 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 Government & Defense organisation, jastrebarsko.hr likely held sensitive business data, client information, and operational records.

How can organisations protect against Threeam attacks?

To defend against Threeam 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.