Cyber Incident Victim: Centre Hospitalier Régional Sambre et Meuse
Date:
May 2023
Location:
France
Summary
A cyberattack targeted the municipal administration of Saint-Brevin, disrupting critical services including email systems and most telephone lines, with only the main switchboard remaining operational. Technical and cybercrime units from the Rennes gendarmerie initiated an investigation, supported by France's national cybersecurity agency, to analyze the breach and securely restore affected servers. While the incident coincided with local political tensions following the mayor's resignation, authorities emphasized no proven connection existed and suggested the attack might be part of a broader campaign impacting multiple French servers. Residents were advised to monitor official communications channels for restoration updates.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 1 motive | 1 technique |
| Threat Actors | Type | Location |
|---|---|---|
| 0 actors | Available to members | Available to members |
Description
On May 24, 2023, the municipal administration of Saint-Brevin-les-Pins experienced a disruptive cyberattack targeting its operational infrastructure. The incident coincided with heightened political tensions in the commune, occurring hours before a scheduled solidarity march for the resigned mayor, Yannick Morez. Technical disruptions became immediately apparent, with municipal email systems and telephone lines—excluding the main switchboard—rendered inoperable. This degradation of communications persisted into the following day, significantly impeding routine administrative functions and public service delivery. The Rennes branch of the Gendarmerie's technical and IT investigative unit assumed responsibility for forensic analysis, though preliminary assessments did not establish a verifiable connection between the attack and Saint-Brevin's concurrent political instability. Investigative hypotheses included the possibility of a coordinated campaign affecting multiple French governmental servers, though no corroborating evidence of broader impact was disclosed.
Municipal authorities activated a coordinated response protocol involving France's National Cybersecurity Agency (ANSSI) and relevant state entities to conduct system diagnostics, preserve evidence, and prepare for secure service restoration. Operational recovery timelines remained undefined as of May 25, with restoration efforts prioritizing thorough vulnerability assessments prior to reactivation. The municipality maintained public communication through its official website and social media channels, directing constituents to these platforms for service updates amidst the ongoing disruption. No data exfiltration, ransomware deployment, or specific threat actor attribution was disclosed in initial public statements. Standard operational procedures remained suspended indefinitely pending completion of security audits and infrastructure hardening measures conducted under gendarmerie oversight.