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Ransomware Victim Technology

Melexis

Ransomware attack by Fog · Disclosed March 6, 2025 · 🇧🇪 Belgium

melexis.com

Date Disclosed
Mar 6, 2025
2025
Threat Group
Fog
189 total victims
Country
🇧🇪 Belgium
Industry
Technology

ThreatAI Analysis

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

About the Fog group

Fog, which uses the .flocked extension for encrypted files, was first observed in May in campaigns by Storm-0844, a threat actor known for distributing Akira. By June, Storm-0844 was deploying Fog more than Akira. Fog has listed 189 victims since December 2021.

Incident Analysis

Melexis was targeted by Fog ransomware, one of the most active ransomware groups in our database with 189 confirmed victims globally. The attack was disclosed on March 6, 2025, when Melexis appeared on the group's dark web leak site.

Melexis is based in Belgium , operating in the Technology sector. Belgium ranks #23 globally for ransomware attacks, with 135 victims in our database.

Sector context: Technology companies hold intellectual property, customer data, and source code — all highly valuable assets. A successful ransomware attack can also put downstream customers at risk through supply chain exposure.

Fog 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 10:00 UTC.

Frequently Asked Questions

Was Melexis attacked by ransomware?

Yes. Melexis was listed as a victim of the Fog ransomware group on March 6, 2025. The organisation is based in Belgium and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Melexis?

Melexis was attacked by Fog ransomware. Fog is one of the most active ransomware groups, having claimed 189 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Melexis ransomware attack occur?

The ransomware attack on Melexis was disclosed on March 6, 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 Melexis ransomware attack?

The specific data stolen from Melexis 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 Technology organisation, Melexis likely held source code, intellectual property, and customer data.

How can organisations protect against Fog attacks?

To defend against Fog 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.