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CompTIA CySA+ (CS0-003)

Exam Overview

The CompTIA Cybersecurity Analyst (CySA+) CS0-003 certification validates the ability to detect, prevent, and respond to cybersecurity threats by performing data analysis, threat hunting, vulnerability management, and incident response. It bridges Security+ and CASP+/PenTest+, focusing on the analyst-level "blue team" defensive role inside a security operations center (SOC).

Exam Details: - Exam Code: CS0-003 - Duration: 165 minutes - Number of Questions: Up to 85 questions - Question Types: Multiple choice and performance-based questions (PBQs) - Passing Score: 750 out of 900 - Cost: $404 USD - Language: English (Japanese, Thai, Portuguese, Spanish planned) - Delivery: Pearson VUE testing center or online proctoring - Validity: 3 years (renewable via CE program) - Prerequisites: None required (Network+ and Security+ recommended, plus 4+ years hands-on IT security experience) - DoD 8140/8570 Approved: Yes (CSSP Analyst, CSSP Incident Responder, CSSP Auditor)

Exam Domains

Domain 1: Security Operations (33%)

  • Importance of system and network architecture concepts in security operations
  • Analyzing indicators of potentially malicious activity
  • Tools or techniques to determine malicious activity
  • Concepts related to attack methodology frameworks
  • Threat intelligence and threat hunting concepts
  • Importance of efficiency and process improvement in security operations

Key Topics: - Log sources, log analysis, network analysis (Wireshark, Zeek, NetFlow) - Indicators of compromise (IoCs) and indicators of attack (IoAs) - Threat actor TTPs, threat modeling, threat feeds - MITRE ATT&CK, Diamond Model, Cyber Kill Chain, OWASP, MITRE D3FEND - SIEM correlation, EDR/XDR telemetry, packet capture, sandboxing - SOAR playbooks, automation, ticketing, MTTD/MTTR

Domain 2: Vulnerability Management (30%)

  • Implement vulnerability scanning methods and concepts
  • Analyze output from vulnerability assessment tools
  • Prioritize vulnerabilities using CVSS, exploitability, and asset value
  • Recommend controls to mitigate attacks and software vulnerabilities
  • Vulnerability response, handling, and management concepts

Key Topics: - Asset discovery, scanning types (credentialed, agent, passive), scope - Tools - Nessus, Qualys, OpenVAS, Nikto, Burp Suite, OWASP ZAP, Nmap - CVSS v3.1/v4.0, CVE, CWE, EPSS, KEV catalog - Common vulnerabilities - SQLi, XSS, SSRF, RCE, IDOR, race conditions - Validation - false positives, true positives, compensating controls - Patch management, configuration management, risk acceptance, exceptions

Domain 3: Incident Response and Management (20%)

  • Apply incident response process concepts
  • Detection and analysis of attack methodology frameworks
  • Containment, eradication, recovery, and post-incident activities

Key Topics: - NIST SP 800-61 lifecycle, SANS PICERL model - Evidence handling, chain of custody, order of volatility, write blockers - Forensic imaging (dd, FTK Imager), memory capture (Volatility, LiME) - Root cause analysis, timeline reconstruction, lessons learned - Communication, legal hold, regulatory notification, public relations

Domain 4: Reporting and Communication (17%)

  • Vulnerability management reporting and communication
  • Incident response reporting and communication
  • Metrics, KPIs, and stakeholder communication
  • Compliance reports and ticketing systems

Key Topics: - Vulnerability management reports (technical and executive) - Incident reports, declaration, post-mortems, after-action reviews - Metrics - MTTD, MTTR, dwell time, false-positive rate, SLA compliance - Stakeholder mapping - SOC, IR team, legal, executives, regulators, customers - Compliance frameworks - PCI-DSS, HIPAA, GDPR, SOX, FedRAMP, ISO 27001 - Ticketing - Jira, ServiceNow, Remedy, TheHive, RTIR

Study Materials

Notes

Study Resources

  • Fact Sheet - SIEM queries, Sigma rules, Snort/Suricata, MITRE ATT&CK, log cheatsheets
  • Practice Plan - 8-week structured study schedule
  • Scenarios - 12+ incident response and threat hunting scenarios
  • Strategy - Exam day strategy, PBQ tips, keyword decoding

Official Resources

Video Courses

  1. Jason Dion CySA+ CS0-003 (Udemy) - Most popular, full video course plus practice
  2. CompTIA CertMaster Learn - Official self-paced training with labs
  3. ITProTV/ACI Learning CySA+ - Video course with hands-on labs
  4. Pluralsight CySA+ Path - Multi-instructor structured path

Practice Exams

  1. CompTIA CertMaster Practice - Official practice questions
  2. Jason Dion Practice Exams (Udemy) - Six full-length practice exams
  3. Kaplan IT Training - Practice exams with explanations
  4. CyberVista - Adaptive practice platform

Books

  1. CompTIA CySA+ Study Guide (CS0-003) by Mike Chapple and David Seidl - Sybex
  2. CompTIA CySA+ Cert Guide (CS0-003) by Troy McMillan - Pearson
  3. CompTIA CySA+ All-in-One Exam Guide (CS0-003) by Brent Chapman - McGraw Hill

Hands-On Labs

  • TryHackMe SOC Level 1 path - SIEM, log analysis, threat intel
  • Blue Team Labs Online - Investigation challenges
  • LetsDefend.io - Live SOC simulation with real alerts
  • CyberDefenders.org - DFIR and blue team challenges
  • Splunk Boss of the SOC (BOTS) - Splunk dataset challenges

Companion Materials

Cert Why It Pairs
CompTIA Security+ (SY0-701) Foundational layer; CySA+ assumes Security+ knowledge
AWS Security Specialty (SCS-C02) Cloud-native detection, GuardDuty, Security Hub, CloudTrail
Microsoft SC-200 Sentinel KQL, Defender XDR, mirrors CySA+ analyst role for Azure
(ISC)2 CISSP Strategic and managerial layer above CySA+ tactical work
GIAC GCIH Deep dive on incident handling, complements Domain 3
GIAC GCIA Network intrusion analysis, complements packet/log work
GIAC GCFA Forensic analysis, complements evidence handling

Next Steps After Certification

Career Paths

  • SOC Analyst (Tier 1, Tier 2, Tier 3)
  • Incident Responder / DFIR Analyst
  • Threat Hunter
  • Vulnerability Management Analyst
  • Cyber Threat Intelligence Analyst
  • Detection Engineer
  • Security Operations Engineer

Advanced Certifications

  • CompTIA CASP+ (SecurityX) - Senior security engineer/architect role
  • CompTIA PenTest+ - Offensive complement to CySA+
  • GIAC GCIH - GIAC Certified Incident Handler
  • GIAC GCIA - GIAC Certified Intrusion Analyst
  • GIAC GCFA - GIAC Certified Forensic Analyst
  • (ISC)2 CISSP - Senior leadership track
  • AWS Security Specialty / Microsoft SC-200 - Cloud-native blue team

Good luck with your CompTIA CySA+ certification! This is the gateway certification for SOC analyst and incident responder roles. Focus on log reading, tool output interpretation, and matching IoCs to MITRE ATT&CK techniques.