SIEM (Security Information and Event Management)

Security Information and Event Management (SIEM) is a category of security software that provides real-time analysis of security alerts generated by hardware and software throughout an organization's IT infrastructure. SIEM platforms aggregate log data from diverse sources — firewalls, servers, endpoints, applications, cloud services — and apply correlation rules, behavioral analytics, and threat intelligence to identify anomalies and security incidents.\n\nModern SIEM platforms (such as Splunk, Microsoft Sentinel, and IBM QRadar) have evolved beyond simple log aggregation to incorporate user and entity behavior analytics (UEBA), threat intelligence integration, automated playbooks, and SOAR (Security Orchestration, Automation, and Response) capabilities.\n\nFor SOC teams, SIEM is the central nervous system of the security monitoring operation. The quality of threat intelligence fed into a SIEM — particularly IoCs from dark web monitoring and known attacker infrastructure — directly determines its ability to detect sophisticated threats.