An organization deploys a centralized Security Information and Event Management (SIEM) platform to monitor enterprise infrastructure. In what sequence does a security log event travel through the SIEM pipeline from initial creation to analyst notification?
- 1Event Generation: An operating system or service writes an activity record to its local system log.
- 2Log Forwarding: A collector agent or Syslog service securely transmits the log entry over the network to the SIEM instance.
- 3Parsing and Normalization: The SIEM extracts unstructured fields into standardized key-value pairs (such as IP addresses and timestamps).
- 4Event Correlation: The SIEM engine evaluates normalized data streams against defined detection rules and threat patterns.
- 5Alert Generation: The SIEM triggers a security incident notification for SOC analyst investigation.
Answer
The correct order of log processing within a SIEM pipeline is: Event Generation -> Log Forwarding -> Parsing and Normalization -> Event Correlation -> Alert Generation.
Log processing follows a logical pipeline: an event must first be generated locally on an endpoint, forwarded to central storage, parsed into standard fields so multi-source data is consistent, evaluated by correlation engines against threat rules, and finally escalated as an alert when suspicious activity is detected.
Step-by-Step Solution
Key Concept
SIEM Log Processing Pipeline Lifecycle