Security Monitoring with Wazuh

Wazuh has become my go-to solution for security monitoring and threat detection. As an open-source platform, it provides SIEM capabilities, intrusion detection, vulnerability assessment, and compliance monitoring without the licensing costs of commercial alternatives.

The Wazuh architecture consists of agents deployed on endpoints, a central manager for processing and analysis, and an indexer (based on OpenSearch) for storing and querying security data. This distributed design scales well and provides flexibility in deployment options.

File integrity monitoring (FIM) detects unauthorized changes to critical system files. Combined with rootkit detection and system inventory, Wazuh provides comprehensive endpoint visibility. I configure baseline policies for different system types and alert on deviations.

Log analysis and correlation help identify security incidents across multiple data sources. Wazuh rules can detect patterns indicating brute force attacks, privilege escalation attempts, or suspicious process execution. Custom rules extend detection capabilities for environment-specific threats.

Compliance monitoring with built-in checks for PCI-DSS, GDPR, HIPAA, and CIS benchmarks simplifies audit preparation. The ability to continuously assess compliance posture rather than point-in-time audits improves overall security hygiene.

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