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SOC Operations

SOC Operations

SOC Operations

SOC Operations

SOC Operations

SOC Operations

SOC Operations

SOC Operations

SOC Operations

Introduction

A Security Operations Center (SOC) is a centralized team responsible for monitoring, detecting, analyzing, and responding to security incidents. Building an effective SOC requires structured processes, skilled personnel, appropriate tools, and continuous improvement.

SOC Tier Model

The SOC team structure typically follows a three-tier model that provides clear career progression and escalation paths.

Tier 1 — Triage

Tier 1 analysts monitor dashboards, triage alerts, and determine initial severity. They handle known false positives and escalate suspicious events to Tier 2.

Responsibilities:

• Monitor SIEM dashboards and alert queues

• Perform initial alert triage and categorization

• Execute basic investigation steps per playbooks

• Create tickets for escalated incidents

• Maintain shift logs

Tier 1 triage automation example

def triage_alert(alert):

Check against known false positive patterns

for fp_pattern in false_positive_patterns:

if fp_pattern.matches(alert):

alert.auto_close()

return

Enrich with threat intelligence

alert.iocs = enrich_iocs(alert.extract_iocs())

Escalate if critical

if alert.severity == 'critical':

alert.assign_tier(2)

alert.notify('pagerduty')

else:

alert.assign_tier(2, queue='standard')

Tier 2 — Investigation

Tier 2 analysts perform deep investigation, containment, and remediation. They correlate data from multiple sources and determine the full scope of incidents.

Responsibilities:

• Deep-dive analysis of escalated alerts

• Host and network forensic analysis

• Malware triage and reverse engineering

• Incident containment and remediation

• Playbook refinement

Tier 3 — Advanced Analysis

Tier 3 analysts handle the most complex incidents, develop detection rules, perform threat hunting, and conduct post-incident reviews.

Responsibilities:

• Advanced malware analysis and reverse engineering

• Threat hunt development and execution

• SIEM content development and tuning

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