Security Experts:

Connect with us

Hi, what are you looking for?



Luxembourg Energy Company Hit by Ransomware

A known ransomware group has taken credit for a cyberattack on Creos, a company that owns and manages electricity networks and natural gas pipelines in Luxembourg.

A known ransomware group has taken credit for a cyberattack on Creos, a company that owns and manages electricity networks and natural gas pipelines in Luxembourg.

In statements issued on July 25 and July 29, Creos parent company Encevo said various entities of the Encevo Group had been hit by a cyberattack that resulted in data becoming inaccessible and files being exfiltrated from its computers. This description suggests the attackers used file-encrypting malware after stealing potentially valuable files.

Encevo said gas and electricity supply has not been impacted by the attack, which it detected on the night of July 22. The company’s investigation is ongoing and it has yet to determine exactly what type of information has been compromised. As a precaution, users have been advised to change their passwords on Encevo websites — although some services may be offline following the breach.

The energy firm is working on determining who is impacted and it has asked customers not to contact it for the time being. A web page has been set up where the company shares updates on the incident, in both English and French. Law enforcement has been notified.

The attack appears to have been conducted by operators or affiliates of the ransomware known as BlackCat, Alphv and Noberus. On their Tor-based leak website, the cybercriminals claimed on July 29 that they stole 180,000 files, or roughly 150 Gb of information, including contracts, agreements, passports, bills, and emails. They have published a few screenshots to demonstrate their claims.

BlackCat ransomware attack on Creos

One of the screenshots shows a system apparently belonging to Balansys, a joint venture of Creos Luxembourg and Fluxys Belgium, which aims to provide a single integrated gas market for Belgium and Luxembourg.

The hackers claimed the stolen data would be made public on Monday, but there do not seem to be any additional leaked files on their website at the time of writing.

The BlackCat ransomware operation emerged in November 2021 and has since targeted many organizations worldwide. Cybersecurity firms have found links between BlackCat and the BlackMatter and DarkSide ransomware operations.

A data theft tool used by BlackCat suggests that the cybercriminals are increasingly interested in targeting industrial organizations. The operation also attracted the attention of the cybersecurity community recently after the creation of a searchable database with victim data, and a dedicated leak site for one victim in an effort to pressure them into paying up.

Related: 4-Hour Time-to-Ransom Seen in Quantum Attack as Accelerated Ransomware Increasingly Common

Related: European Oil Port Terminals Hit by Cyberattack

Related: Swissport Investigating Ransomware Group’s Data Leak Claims

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content


Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.


Satellite TV giant Dish Network confirmed that a recent outage was the result of a cyberattack and admitted that data was stolen.


The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.

Application Security

PayPal is alerting roughly 35,000 individuals that their accounts have been targeted in a credential stuffing campaign.


No one combatting cybercrime knows everything, but everyone in the battle has some intelligence to contribute to the larger knowledge base.


As it evolves, web3 will contain and increase all the security issues of web2 – and perhaps add a few more.


A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...