Cyber Threat Intelligence
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Ransomware Victim Energy

bouygues-es.fr

Ransomware attack by J · Disclosed May 12, 2025 · 🇫🇷 France

bouygues-es.fr

Date Disclosed
May 12, 2025
2025
Threat Group
J
41 total victims
Country
🇫🇷 France
Industry
Energy

ThreatAI Analysis

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

About the J group

J is an emerging ransomware group that launched its leak site in May 2025, claiming over 41 victims by late 2025 including FAI Aviation Group (Germany), operating primarily as a leak-site-centric extortion identity with limited public technical analysis. J has listed 41 victims since February 2025.

Incident Analysis

bouygues-es.fr was targeted by J ransomware, one of the most active ransomware groups in our database with 41 confirmed victims globally. The attack was disclosed on May 12, 2025, when bouygues-es.fr appeared on the group's dark web leak site.

bouygues-es.fr is based in France , operating in the Energy sector. France ranks #6 globally for ransomware attacks, with 517 victims in our database.

Sector context: Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

J 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 02:00 UTC.

Frequently Asked Questions

Was bouygues-es.fr attacked by ransomware?

Yes. bouygues-es.fr was listed as a victim of the J ransomware group on May 12, 2025. The organisation is based in France and operates in the Energy sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked bouygues-es.fr?

bouygues-es.fr was attacked by J ransomware. J is one of the most active ransomware groups, having claimed 41 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the bouygues-es.fr ransomware attack occur?

The ransomware attack on bouygues-es.fr was disclosed on May 12, 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 bouygues-es.fr ransomware attack?

The specific data stolen from bouygues-es.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 Energy organisation, bouygues-es.fr likely held sensitive business data, client information, and operational records.

How can organisations protect against J attacks?

To defend against J 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.