What is a SIEM?
A Security Information and Event Management (SIEM) system is a central platform that collects, correlates and evaluates security events and log data from across an IT infrastructure in real time. It forms the centrepiece of modern security architectures, enabling attack patterns to be detected early before damage occurs.
A SIEM aggregates information from firewalls, servers, endpoints, cloud services and applications — giving security teams full visibility across the IT landscape. Rule-based alerts and AI-driven analytics help distinguish real threats from noise and initiate targeted countermeasures.
For organisations subject to NIS2 and DORA, a SIEM is also a key tool for meeting reporting obligations: it records security incidents in an audit-proof manner and provides the basis for the legally required notification within 24 or 72 hours.
How APASEC Guides You
APASEC does not implement a SIEM itself — we guide your SIEM project at management level. That means we help you select the right platform, define requirements, steer the implementation partner and organisationally embed ongoing operations.
- Requirements analysis and platform selection (vendor-neutral)
- Project management and quality assurance during implementation
- Definition of use cases, alert thresholds and escalation processes
- Integration with existing ISMS and compliance reporting
- Training and handover to internal teams or MSSP
Common SIEM Platforms
- ELK Stack (Elasticsearch, Logstash, Kibana)
- Grafana Loki for log aggregation
- Wazuh as open-source SIEM/XDR
- Microsoft Sentinel, Splunk, IBM QRadar (Enterprise)
Benefits
- Real-time detection of security incidents
- Centralised log management across all IT systems
- Automated alerting for suspicious activity
- Compliance reporting for NIS2, DORA and ISO 27001