Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
SP
Ransomware Victim Consumer Services

Spijkermat

Ransomware attack by Radiant · Disclosed October 29, 2025 · 🇳🇱 Netherlands

spijkermat.nl

Date Disclosed
Oct 29, 2025
2025
Threat Group
Radiant
8 total victims
Country
🇳🇱 Netherlands
Industry
Consumer Services

ThreatAI Analysis

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

About the Radiant group

Radiant is a financially motivated ransomware group that emerged in September 2025, conducting double- and single-extortion attacks without affiliates, drawing widespread condemnation after attacking UK childcare provider Kido International and publishing photographs, names, and home addresses of over 8,000 children. Radiant has listed 8 victims since October 2025.

Incident Analysis

Spijkermat was targeted by Radiant ransomware, one of the most active ransomware groups in our database with 8 confirmed victims globally. The attack was disclosed on October 29, 2025, when Spijkermat appeared on the group's dark web leak site.

Spijkermat is based in Netherlands , operating in the Consumer Services sector. Netherlands ranks #21 globally for ransomware attacks, with 135 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.

Radiant 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 11, 2026 12:00 UTC.

Frequently Asked Questions

Was Spijkermat attacked by ransomware?

Yes. Spijkermat was listed as a victim of the Radiant ransomware group on October 29, 2025. The organisation is based in Netherlands and operates in the Consumer Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Spijkermat?

Spijkermat was attacked by Radiant ransomware. Radiant is one of the most active ransomware groups, having claimed 8 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Spijkermat ransomware attack occur?

The ransomware attack on Spijkermat was disclosed on October 29, 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 Spijkermat ransomware attack?

The specific data stolen from Spijkermat 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 Consumer Services organisation, Spijkermat likely held sensitive business data, client information, and operational records.

How can organisations protect against Radiant attacks?

To defend against Radiant 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.