Cyber Incident Victim: Compagnie d'aménagement du Bas-Rhône et du Languedoc
Date:
Mar 2023
Location:
France
Summary
BRL Group, a French water and environmental management company, experienced a ransomware attack by the LockBit group resulting in data encryption and exfiltration. The intrusion occurred overnight but did not disrupt water services or operational missions. LockBit threatened to publish exfiltrated data unless ransom demands were met. The company acknowledged potential personal data breaches and advised stakeholders to assume compromised passwords, recommending updates across other platforms using the same credentials. BRL’s IT department mitigated the attack’s effects promptly, though data misuse risks remained due to the incident’s nature.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 1 motive | 1 technique |
| Threat Actor | Type | Location |
|---|---|---|
| 1 actor | Available to members | Available to members |
Description
BRL Group, a French water and environmental management company, experienced a ransomware attack between the night of March 23 and March 24, 2023. The attackers targeted the company’s information systems with dual objectives of encrypting data and exfiltrating confidential information. Despite maintaining what it described as high-security systems, BRL acknowledged this marked its first successful ransomware intrusion amid broader industry increases in cyber threats. Upon detecting the incident, BRL’s Information Systems Directorate (DSI) immediately activated containment protocols to minimize operational disruption. The attack did not compromise critical water service delivery or routine operational missions, ensuring continuity in core public infrastructure functions. BRL issued a formal advisory to stakeholders confirming potential unauthorized access to personal data and appended a detailed note regarding data protection implications. The company refrained from publicly specifying technical details such as initial attack vectors or compromised system scopes when queried by media outlets.
LockBit, a ransomware operation, claimed responsibility for the attack and established April 21 as the deadline for ransom payment before threatening to publish all stolen data. BRL proactively notified clients, suppliers, contractors, and partners about possible personal data exposure stemming from the exfiltration phase of the attack. The company warned stakeholders that reused passwords on BRL applications could be compromised and urged immediate password changes across all platforms where those credentials were replicated. BRL further cautioned affected parties about heightened risks of targeted malicious actions, including phishing or social engineering attempts leveraging stolen data. Although LockBit’s threats amplified pressure for resolution, BRL did not disclose remediation progress, decryption status, or data recovery timelines in public communications. The incident remained unresolved with ongoing uncertainties regarding the full data exfiltration scope and potential publication of sensitive information by the attackers.