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Ransomware Victim Technology

Kandelaar Electrotechniek

Ransomware attack by Blacklock · Disclosed May 16, 2025 · 🇳🇱 Netherlands

www.kandelaar.com

Date Disclosed
May 16, 2025
2025
Threat Group
Blacklock
64 total victims
Country
🇳🇱 Netherlands
Industry
Technology

ThreatAI Analysis

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

About the Blacklock group

BlackLock is a rebranded version of another ransomware group known as Eldorado. It has since become one of the most active extortion syndicates in 2025, heavily targeting technology, manufacturing, construction, finance, and retail sectors. Blacklock has listed 64 victims since November 2023.

Incident Analysis

Kandelaar Electrotechniek was targeted by Blacklock ransomware, one of the most active ransomware groups in our database with 64 confirmed victims globally. The attack was disclosed on May 16, 2025, when Kandelaar Electrotechniek appeared on the group's dark web leak site.

Kandelaar Electrotechniek is based in Netherlands , operating in the Technology sector. Netherlands ranks #22 globally for ransomware attacks, with 136 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.

Blacklock 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 20:00 UTC.

Frequently Asked Questions

Was Kandelaar Electrotechniek attacked by ransomware?

Yes. Kandelaar Electrotechniek was listed as a victim of the Blacklock ransomware group on May 16, 2025. The organisation is based in Netherlands and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Kandelaar Electrotechniek?

Kandelaar Electrotechniek was attacked by Blacklock ransomware. Blacklock is one of the most active ransomware groups, having claimed 64 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Kandelaar Electrotechniek ransomware attack occur?

The ransomware attack on Kandelaar Electrotechniek was disclosed on May 16, 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 Kandelaar Electrotechniek ransomware attack?

The specific data stolen from Kandelaar Electrotechniek 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, Kandelaar Electrotechniek likely held source code, intellectual property, and customer data.

How can organisations protect against Blacklock attacks?

To defend against Blacklock 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.