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Incident

Rheinland-Pfalz

Incident posture

Attack window
Aug 2023
Location
Germany
Status
Historical
CIA posture
Available to members
Updated
2026-01-04 19:53

Linked entities

Victim
Rheinland-Pfalz
Threat actors
0 actors
Sources
2 sources

Timeline

Occurred
Aug 2023
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A cyber incident targeting the municipal administration of Alzey resulted in significant operational disruptions following unauthorized access to its security network infrastructure. Anomalies detected within the network prompted precautionary disconnection of administrative systems, severely limiting service availability, canceling citizen appointments, and impairing telephone communications. While preliminary assessments indicated no confirmed data exfiltration from core administrative networks, investigations involving law enforcement and cybersecurity experts remain ongoing to evaluate the full scope of the breach. The municipality maintains emergency contact channels for urgent matters and is prioritizing restoration efforts while coordinating with relevant authorities.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

1 technique

Description

On or around August 29-30, 2023, the municipal administration of Alzey in Rhineland-Palatinate experienced significant disruptions due to a suspected cyberattack. On Wednesday, anomalies were detected within the city’s network infrastructure, prompting an immediate investigation. Initial assessments indicated unauthorized access to the city’s security network, specifically targeting systems located in front of the firewall separating the security network from the core administrative network. As a precautionary containment measure, all connections to the administrative network were severed to prevent potential lateral movement or data exfiltration. This action resulted in widespread operational interruptions, including the disabling of the municipal telephone system and restricted digital communications. The city publicly confirmed the incident on Thursday morning, announcing the cancellation of all scheduled appointments at the citizen’s office through Saturday. Emergency services remained accessible via in-person visits or a designated phone line (06731-4950) for urgent matters. Authorities emphasized that no evidence of data theft from the administrative network had been identified at that stage, though forensic examinations were ongoing to fully assess compromise scope.

The incident severely impacted municipal operations and public service delivery. All non-essential digital systems remained offline during the initial response phase, forcing staff to rely on manual processes for critical functions. The city coordinated closely with law enforcement agencies, including the State Criminal Police Office (LKA), and cybersecurity experts to investigate the intrusion vector, mitigate vulnerabilities, and restore services. Public updates were disseminated through the city’s official website (alzey.de) and social media channels to maintain transparency. Service restoration timelines were not immediately provided, with officials acknowledging the complexity of securely reintegrating isolated systems. The disruption extended to routine administrative workflows, though essential in-person services at city hall continued under limited capacity. No ransomware deployment or explicit attacker motives were disclosed in available reports. Recovery efforts focused on verifying system integrity before phased reactivation, prioritizing the prevention of recurrent breaches. Municipal representatives reiterated their commitment to resolving the situation while apologizing for inconveniences caused to residents.

Sources

Sources available to members: 2 sources.

CSIDB