The Complete Security Analyst Career Guide: From SOC L1 to Senior Threat Hunter in 2025

Security analysts are the backbone of every organization's defense strategy. Whether you are starting your first SOC role or transitioning from IT operations, this guide covers the skills, tools, certifications, and career progression that matter most in 2025. What Does a Security Analyst Actually Do? A security analyst monitors, detects, investigates, and responds to security threats across an organization's infrastructure. The role spans multiple tiers: SOC L1 (Triage Analyst) - Monitor SIEM dashboards, triage alerts, escalate confirmed incidents, document findings in ticketing systems SOC L2 (Incident Responder) - Deep-dive investigation, log correlation, containment actions, malware triage, forensic evidence collection SOC L3 (Threat Hunter) - Proactive hunting using MITRE ATT&CK, write detection rules (Sigma/YARA), threat intelligence analysis, purple team exercises Senior Analyst / Detection Engineer - Build and tune detection pipelines, reduce false positives, architect security