CREST Practitioner Security Analyst (CPSA) Practice 2026 - Free CPSA Practice Questions and Study Guide

The core purpose of a Security Information and Event Management (SIEM) system is to analyze and aggregate security alerts generated by various network hardware and applications. This functionality allows organizations to achieve real-time visibility into their security posture by collecting and consolidating security data from across the entire enterprise.

A SIEM system performs advanced analysis of security incidents by correlating log data and security alerts in order to detect threats and vulnerabilities. It enables security professionals to identify suspicious activities, respond to incidents effectively, and comply with regulatory requirements by maintaining an audit trail of security events. The aggregation and analysis capabilities are essential for identifying patterns and trends which can inform security strategies and improve an organization's overall security management.

The other options do not align with the primary function of a SIEM system. Physical security monitoring relates more to surveillance and access control systems, which is outside the purview of SIEM software. Ensuring data redundancy is typically a function associated with data storage solutions rather than security management systems. Facilitating user account management pertains to identity and access management (IAM) solutions, which focus on defining and managing the roles and access rights of users domestically and within an organization’s systems. Thus, these aspects do not encompass the core intent of a SIEM system.