SIEM - security information and event management
Security Incident and Event Manager (SIEM) is a set of network security tools, often packaged as a complete security solution, used by IT professionals and system administrators to manage multiple security applications and devices, and to respond automatically to resolve security incidents.
How SIEM Solutions Work
SIEM solutions ingest log data from different network hardware and software systems and analyze that data to correlate events and find anomalies or patterns of behavior that may indicate a security breach. Today's SIEM tools include ingestion and interpretation of logs, threat intelligence feeds, analytics, profiling, security alerts, data presentation and compliance.
SEM and SIM
Related activities and subsets of SIEM include SEM (security event management) and SIM (security information management). In general, SEM is concerned with real-time monitoring of logs and correlation of events, while SIM involves data retention and the later analysis and reporting on log data and security records. [Source: eSecurityPlanet]
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