CompTIA CySA+ V4 (CS0-004) vs CS0-003: What Changed and Which Exam to Take?

The CompTIA Cybersecurity Analyst (CySA+) certification helps cybersecurity professionals build the skills to detect threats, analyze security incidents, and strengthen organizational defenses. CompTIA regularly updates its certification exams to reflect changes in cybersecurity threats, tools, and industry practices.

The transition from CySA+ CS0-003 to CS0-004 (V4) raises an important question for candidates: What has changed, and which exam should you prepare for?

Understanding the differences between these exam versions can help you choose the right preparation strategy, focus on relevant skills, and avoid studying outdated objectives. In this article, we explore the key differences, exam topics, preparation strategies, and factors to consider before choosing your CySA+ exam.

What is CompTIA CySA+?

CompTIA CySA+ is an intermediate-level cybersecurity certification for professionals in security operations, threat detection, vulnerability management, and incident response.

The certification focuses on practical defensive security skills. It helps professionals investigate suspicious activity, identify vulnerabilities, interpret security data, and respond to cyber threats.

CySA+ suits professionals pursuing roles such as:

• Cybersecurity Analyst
• Security Operations Center (SOC) Analyst
• Threat Intelligence Analyst
• Vulnerability Management Analyst
• Incident Response Analyst

Candidates often pursue CySA+ after gaining foundational cybersecurity knowledge through certifications such as CompTIA Security+ or equivalent professional experience.

What is the Difference Between CySA+ CS0-004 and CS0-003?

Both exam versions assess core cybersecurity analyst skills, but CS0-004 updates the objectives to reflect modern security operations and changes the weight assigned to each domain.

The biggest shift is incident response, AI in security operations, cloud and hybrid monitoring, and risk-based vulnerability prioritization.

CS0-004 vs. CS0-003: Exam Comparison

The exam format, duration, question limit, and passing score remain the same. However, candidates must study the objectives for their chosen exam version rather than assume that the older study materials cover everything.

What Changed in CySA+ V4 (CS0-004)?

The updated exam keeps the four-domain structure but adjusts domain weightings and adds or expands several key security topics.

1. CompTIA Changed the Domain Weightings

The biggest change is the shift in balance between vulnerability management and incident response. CS0-004 gives more weight to incident response and slightly less weight to vulnerability management.

What does this mean for candidates?

You should dedicate more preparation time to incident investigation, containment, recovery, and post-incident analysis. You still need strong vulnerability management skills, but you should prioritize your study schedule according to the new domain percentages.

2. AI Plays a Bigger Role in Security Operations

Modern security teams increasingly use AI to support alert analysis, threat detection, investigation, and reporting. CS0-004 reflects this shift by including AI-related security operations topics.

Candidates should understand how security teams can use AI to:

• Summarize logs and security alerts.
• Identify patterns across large volumes of security data.
• Support threat investigation and incident documentation.
• Improve operational workflows while maintaining human oversight.

You should also understand AI-related risks, including prompt injection, sensitive-data exposure, unreliable AI-generated findings, and potential model manipulation.

Why it matters: Security analysts must evaluate AI-generated results critically instead of relying on automated recommendations without verification.

3. Cloud, Hybrid Environments, and Modern Security Architecture Receive More Attention

Organizations increasingly combine on-premises infrastructure with cloud services, containers, APIs, and distributed applications. Security analysts must monitor these environments and investigate suspicious activity across different systems.

CS0-004 expands the relevance of topics such as:

• Cloud and hybrid security monitoring.
• Container and API security.
• Zero Trust and Zero Trust Network Access (ZTNA).
• Secure Access Service Edge (SASE).
• Extended Detection and Response (XDR).

Candidates should learn how these technologies operate and how security teams use their logs, alerts, and monitoring capabilities to investigate threats.

4. Vulnerability Management Focuses More on Risk-Based Prioritization

Finding vulnerabilities is only one part of vulnerability management. Security analysts must also determine which weaknesses pose the greatest risk to the organization.

CS0-004 strengthens the relevance of concepts such as:

• Exploit Prediction Scoring System (EPSS): Helps estimate the likelihood that attackers will exploit a vulnerability.
• Software Bill of Materials (SBOM): Identifies software components and supports software supply-chain risk analysis.
• CVSS: Helps assess vulnerability severity.
• Security baselines: Supports configuration assessment against recognized security benchmarks.

Rather than prioritizing vulnerabilities solely by severity score, analysts should consider exploit likelihood, asset importance, exposure, and business impact.

5. Incident Response Receives Greater Emphasis

Incident response accounts for 24% of CS0-004, compared with 20% of CS0-003. This change highlights the importance of investigating incidents and making appropriate response decisions.

Candidates should understand how to:

• Triage alerts and identifies potential incidents.
• Analyze evidence and determine the scope of an attack.
• Select appropriate containment measures.
• Coordinate eradication and recovery.
• Document root causes and lessons learned.

Practice scenario-based questions that require you to select the best response to a security incident. These exercises help you apply concepts rather than memorize definitions.

6. Security Reporting and Control Concepts Remain Important

Although Reporting and Communication drops from 17% to 16%, it remains essential. Analysts must communicate findings clearly to technical teams, management, and other stakeholders.

Practice preparing vulnerability reports, incident summaries, remediation recommendations, and performance metrics.

CS0-004 also updates how candidates encounter security-control categories and functions. Review the current exam objectives carefully instead of relying on terminology from older CS0-003 notes.

Which CySA+ Exam Should You Take: CS0-004 or CS0-003?

Your decision should depend on your current preparation, exam availability, and timeline.

• Choose CS0-004 if you are starting your preparation.

The V4 exam is the current version. Its objectives reflect newer security practices, so new candidates should build their study plans around CS0-004.

• Choose CS0-004 if you have studied CS0-003 but have not booked your exam.

Your existing knowledge of log analysis, threat detection, vulnerability scanning, and incident response still provides a useful foundation. Compare your notes against the new objectives and study the gaps.

• Consider CS0-003 only if you are already prepared and can take it before retirement.

Check the current exam availability in your region before making this decision. The English CS0-003 exam is reported to retire on December 22, 2026, so candidates should confirm the deadline with CompTIA before booking.

Conclusion

Both CS0-003 and CS0-004 grant the same CompTIA CySA+ credential, which remains valid for three years regardless of which version you pass. If you are starting fresh, focus directly on CS0-004 to align your skills with modern SOC operational demands. Mastering applied threat detection, vulnerability prioritization, and incident response requires structured, hands-on practice. Build job-ready analytical skills and pass on the first try with InfosecTrain’s CompTIA CySA+ Certification Training, featuring expert instructor-led mentorship, interactive lab scenarios, realistic mock exams, and complete post-training support.