Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
CH
Ransomware Victim Healthcare

ch-armentieres.fr

Ransomware attack by Blackout · Disclosed February 26, 2024 · 🇫🇷 France

ch-armentieres.fr

Date Disclosed
Feb 26, 2024
2024
Threat Group
Blackout
15 total victims
Country
🇫🇷 France
Industry
Healthcare

ThreatAI Analysis

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

About the Blackout group

Blackout is a ransomware group that first appeared in early 2024, initially claiming attacks against healthcare entities in Canada, France, and Germany before expanding to telecommunications, mining, and manufacturing sectors, operating a double-extortion model with a data leak site. Blackout has listed 12 victims since February 2024.

Incident Analysis

ch-armentieres.fr was targeted by Blackout ransomware, one of the most active ransomware groups in our database with 15 confirmed victims globally. The attack was disclosed on February 26, 2024, when ch-armentieres.fr appeared on the group's dark web leak site.

ch-armentieres.fr is based in France , operating in the Healthcare sector. France ranks #6 globally for ransomware attacks, with 517 victims in our database.

Sector context: Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Blackout 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 7, 2026 16:00 UTC.

Frequently Asked Questions

Was ch-armentieres.fr attacked by ransomware?

Yes. ch-armentieres.fr was listed as a victim of the Blackout ransomware group on February 26, 2024. The organisation is based in France and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked ch-armentieres.fr?

ch-armentieres.fr was attacked by Blackout ransomware. Blackout is one of the most active ransomware groups, having claimed 15 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the ch-armentieres.fr ransomware attack occur?

The ransomware attack on ch-armentieres.fr was disclosed on February 26, 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 ch-armentieres.fr ransomware attack?

The specific data stolen from ch-armentieres.fr 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 Healthcare organisation, ch-armentieres.fr likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Blackout attacks?

To defend against Blackout 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.