What is SIEM in Cybersecurity?

SIEM is the central nervous system of every cybersecurity security operations center. SOC analysts spend most of their shifts investigating SIEM alerts in platforms like Splunk, Microsoft Sentinel, or IBM QRadar. Writing detection rules and tuning alert thresholds are core skills for any detection-focused role.

Cybersecurity professionals who work with SIEM include SOC Analyst, Security Engineer, Incident Responder. These roles apply SIEM knowledge within the Defensive Security domain.