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Ransomware Victim

Altpro

Ransomware attack by Coinbasecartel Β· Disclosed April 18, 2026 Β· πŸ‡­πŸ‡· Croatia

altpro.hr

Date Disclosed
Apr 18, 2026
2026
Threat Group
Coinbasecartel
188 total victims
Country
πŸ‡­πŸ‡· Croatia
Industry
β€”

Incident Analysis

Altpro was targeted by Coinbasecartel ransomware, one of the most active ransomware groups in our database with 188 confirmed victims globally. The attack was disclosed on April 18, 2026, when Altpro appeared on the group's dark web leak site.

Altpro is based in Croatia . Croatia ranks #51 globally for ransomware attacks, with 26 victims in our database.

Coinbasecartel 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 5, 2026 02:00 UTC.

Frequently Asked Questions

Was Altpro attacked by ransomware?

Yes. Altpro was listed as a victim of the Coinbasecartel ransomware group on April 18, 2026. The organisation is based in Croatia. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Altpro?

Altpro was attacked by Coinbasecartel ransomware. Coinbasecartel is one of the most active ransomware groups, having claimed 188 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Altpro ransomware attack occur?

The ransomware attack on Altpro was disclosed on April 18, 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 Altpro ransomware attack?

The specific data stolen from Altpro 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. Sensitive business data was likely targeted.

How can organisations protect against Coinbasecartel attacks?

To defend against Coinbasecartel 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.