creedalene/CompTIA-SecurityX-Domain4.Security-Operations

# CompTIA SecurityX (CAS-005) Domain 4.0 **Security Operations** This content provides clear, structured coverage of core security operations topics, including: * Security Information and Event Management (SIEM) * Threat hunting and threat intelligence * Vulnerability analysis and attack surface reduction * Incident response data and artifact analysis * Malware analysis, reverse engineering, and forensic techniques ## 📋 Table of Contents * [Overview](#overview) * [Repository Purpose](#repository-purpose) * [Domain 4.0 Coverage](#domain-40-coverage) * [Detailed Notes](#detailed-notes) * [Key Topics](#key-topics) * [DoD / Defense Focus](#dod--defense-focus) * [How to Use This Repository](#how-to-use-this-repository) * [Author](#author) ### Overview These are my personal study notes and reference materials for **CompTIA SecurityX (CAS-005) Domain 4.0: Security Operations**. I focus heavily on practical application, especially in defense and enterprise environments. ### Repository Purpose I built this to help senior cybersecurity professionals and defense contractors prepare for the CAS-005 exam while also serving as a living reference for real-world security operations work. The material emphasizes how monitoring, threat hunting, vulnerability management, and incident response decisions are made at the architect and operations lead level. ### Domain 4.0 Coverage This domain makes up approximately **22%** of the SecurityX exam and focuses on analyzing data for monitoring and response, reducing attack surfaces, applying threat hunting and intelligence concepts, and performing in-depth artifact analysis during incidents. ### Detailed Notes * **[SecurityX (CAS-005) Domain 4.1: Monitoring and Response Data Analysis](https://github.com/creedalene/CompTIA-SecurityX-Domain4.Security-Operations/blob/main/SecurityX-Domain4.1.md)** * **[SecurityX (CAS-005) Domain 4.2: Vulnerability and Attack Surface Analysis](https://github.com/creedalene/CompTIA-SecurityX-Domain4.Security-Operations/blob/main/SecurityX-Domain4.2.md)** * **[SecurityX (CAS-005) Domain 4.3: Threat Hunting and Threat Intelligence](https://github.com/creedalene/CompTIA-SecurityX-Domain4.Security-Operations/blob/main/SecurityX-Domain4.3.md)** * **[SecurityX (CAS-005) Domain 4.4: Incident Response Data and Artifact Analysis](https://github.com/creedalene/CompTIA-SecurityX-Domain4.Security-Operations/blob/main/SecurityX-Domain4.4.md)** ### Key Topics * SIEM operations, event parsing, correlation, and behavioral analytics * Aggregate data analysis, baselines, and diverse data source integration * Common vulnerabilities and attacks (injection, XSS, SSRF, deserialization, etc.) * Mitigation strategies including input validation, least privilege, and defense-in-depth * Internal and external threat intelligence sources * Rule-based languages (Sigma, YARA, Snort) and TTP-focused hunting * Malware analysis, reverse engineering, timeline reconstruction, and root cause analysis * Cloud workload protection and insider threat considerations ### DoD / Defense Focus I place strong emphasis on: * Integration with the Risk Management Framework (RMF) and continuous monitoring (RMF Step 6) * DISA STIGs, ACAS, and IAVM processes for vulnerability management * CJCSM 6510.01B cyber incident handling procedures * USCYBERCOM and JFHQ-DODIN threat intelligence and hunting operations * eMASS workflows, CORA assessments, and CUI protection in operational environments ### How to Use This Repository 1. Start with the **Domain 4.1 Notes** for foundational SIEM and monitoring concepts 2. Use the tables, practical scenarios, and DoD-specific guidance for both exam prep and on-the-job reference 3. Check back regularly — I’ll be expanding this repository with additional sections and files ### Author **Cree Dalene** Senior Cybersecurity Assessor and Engineer *Defending mission-critical environments through superior security operations and architecture.*