Cyber Threat Intelligence
Today In Cyber Sponsor Today In Cyber
ZY
Ransomware Victim Technology

zyxel

Ransomware attack by Helldown ยท Disclosed August 17, 2024 ยท ๐Ÿ‡ณ๐Ÿ‡ฑ Netherlands

Zyxel.eu

Date Disclosed
Aug 17, 2024
2024
Threat Group
Helldown
36 total victims
Country
๐Ÿ‡ณ๐Ÿ‡ฑ Netherlands
Industry
Technology

Incident Analysis

zyxel was targeted by Helldown ransomware, one of the most active ransomware groups in our database with 36 confirmed victims globally. The attack was disclosed on August 17, 2024, when zyxel appeared on the group's dark web leak site.

zyxel is based in Netherlands , operating in the Technology sector. Netherlands ranks #23 globally for ransomware attacks, with 120 victims in our database.

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

Helldown 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 โ€” 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 3, 2026 16:00 UTC.

Frequently Asked Questions

Was zyxel attacked by ransomware?

Yes. zyxel was listed as a victim of the Helldown ransomware group on August 17, 2024. 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 zyxel?

zyxel was attacked by Helldown ransomware. Helldown is one of the most active ransomware groups, having claimed 36 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the zyxel ransomware attack occur?

The ransomware attack on zyxel was disclosed on August 17, 2024. 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 zyxel ransomware attack?

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

How can organisations protect against Helldown attacks?

To defend against Helldown 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.