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CompTIA CS0-004 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Vulnerability Management	26%	- Control Types, Risks, and Vulnerability Management 1. Risk concepts 2. Application security 3. Control types 4. Risk management strategies 5. Policies, governance, and service-level objectives 6. Control functions 7. Third-party risk - Vulnerability Prioritization and Mitigation 1. Scoring methods 2. Vulnerability prioritization criteria 3. Context awareness 4. Validation of remediation 5. Mitigation strategies - Vulnerability Assessment Tools 1. Vulnerability scanners 2. Breach attack simulation tools 3. Multipurpose tools 4. Web application scanners 5. Network scanning and mapping 6. Cloud infrastructure assessment tools - Vulnerability Scanning Methods 1. Planning considerations 2. Asset inventory 3. Discovery 4. Scan types 5. Security baseline scanning
Topic 2: Security Operations	34%	- Artificial Intelligence in Security Operations 1. AI risks 2. AI use cases 3. AI governance - Threat Intelligence and Threat Hunting 1. Threat mapping 2. Threat actors 3. Confidence-level impacts 4. Indicators of compromise 5. Collection methods and sources 6. Cyber deception 7. Tactics, techniques, and procedures 8. Threat modeling - System and Network Architecture in Security Operations 1. Identity and access management 2. Infrastructure and system architecture concepts 3. Logging concepts 4. Device management concepts 5. Encryption techniques 6. Network architecture concepts 7. Operating system concepts 8. Data protection concepts 9. Critical infrastructure concepts - Indicators of Potential Malicious Activity 1. Email-related attacks 2. Identity-based indicators 3. Social engineering attacks 4. Cloud-related indicators 5. Network-related indicators 6. Host-related indicators 7. Application-related indicators 8. Unauthorized configuration - Tools for Determining Malicious Activity 1. Pattern recognition and suspicious command analysis 2. File formats 3. Endpoint security 4. Threat intelligence platforms 5. Domain and IP reputation 6. File analysis 7. Programming and scripting languages 8. Packet analysis 9. Sandboxing 10. User and entity behavior analysis 11. Email analysis 12. Log analysis and SIEM 13. Decoding and parsing - Efficiency and Process Improvement in Security Operations 1. Automation and orchestration 2. Data enrichment 3. Standardize processes 4. Technology and tool integration 5. Streamline operations
Topic 3: Incident Response and Management	24%	- Attack Methodology Frameworks 1. Diamond Model of Intrusion Analysis 2. MITRE ATT&CK 3. Cyber Kill Chain - Incident Response Techniques 1. Evidence gathering and preservation 2. Playbooks and roles 3. Root cause analysis 4. Isolation and escalation 5. Timeline, severity, impact, and prioritization 6. Training and exercises 7. Corrective action development 8. Alerts, notifications, and triage 9. Log collection, correlation, and enrichment 10. Remediation and verification 11. Incident response and communication plans 12. Restoration - Incident Response Process 1. Analysis 2. Containment 3. Post-incident activities 4. Preparation 5. Eradication 6. Detection 7. Recovery
Topic 4: Reporting and Communication	16%	- Vulnerability Management Reporting and Communication 1. Risk scorecards 2. Compliance findings 3. Inhibitors to remediation 4. Action plans 5. Metrics and key performance indicators 6. Vulnerability scan reports 7. Stakeholder identification and communication - Security Operations and Incident Response Reporting and Communication 1. Operational security awareness 2. Communication plan 3. Internal threat intelligence report 4. Incident declaration and escalation 5. Shift and incident handover 6. Metrics and key performance indicators 7. Post-incident reporting 8. Executive summary

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q133-Q138):

NEW QUESTION # 133
The vulnerability management team must scan the cloud environment to establish security baselines.
Which of the following assessment tools should the team use to perform this task?

A. Caldera
B. Metasploit
C. Maltego
D. Prowler

Answer: D

Explanation:
Prowler is designed for cloud security assessment, configuration review, and compliance evaluation, which directly meets the requirement to establish cloud-security baselines. The project's official repository describes Prowler as an open-source cloud security platform that automates security and compliance assessments across cloud environments and provides extensive security checks, reporting, and remediation guidance.
Baseline assessments establish an expected security posture against which subsequent configurations and changes can be evaluated. Prowler can examine cloud settings such as identity permissions, logging, encryption, public exposure, network controls, storage configuration, and service-specific security features.
This allows the vulnerability-management team to identify deviations from security and compliance expectations.
Metasploit is an exploitation framework used primarily for penetration testing and validation of exploitable weaknesses. Maltego is an information-gathering and relationship-mapping platform frequently associated with OSINT and infrastructure reconnaissance. MITRE CALDERA is an adversary-emulation platform used to exercise defensive controls using automated attack techniques.
The term "cloud environment" combined with "security baselines" points directly toward a cloud posture and compliance assessment tool rather than exploitation, OSINT, or adversary simulation.
Study Guide Reference: Vulnerability Management # Cloud Assessments # Prowler # Security Baselines # Configuration Auditing # Compliance Checks # Cloud Security Posture.

NEW QUESTION # 134
A security operations center (SOC) analyst investigates the results of a password spray test conducted by the vulnerability management team.
The analyst must:

Identify Linux systems that have successful and unsuccessful logins with username "User1".
Create an output report named "linux-events" of all the events to a flat file.
The analyst issues the following console command:
ls /var/log/
The shortened output of the command is below:
Which of the following commands should the analyst use to meet the report output requirements?

A. cat /var/log/sssd | grep "User1" > linux-events.txt
B. cat /var/log/faillog.log | grep "User1" > linux-events.txt
C. cat /var/log/auth.log | grep "User1" > linux-events.txt
D. cat /var/log/syslog | grep "User1" > linux-events.txt

Answer: C

Explanation:
/var/log/auth.log is the appropriate source because it records authentication and authorization activity on Debian/Ubuntu-style Linux systems, including password-related events, SSH logins, PAM authentication, and other authorization events. Canonical's Ubuntu documentation specifically identifies /var/log/auth.log as the authorization log used for password prompts, sudo, and remote logins.
The command performs three operations. cat /var/log/auth.log sends the log contents to standard output. The pipe forwards that data to grep "User1", which selects records containing the required username. Finally, > linux-events.txt redirects the resulting matching records into the requested flat-file report. Because auth.log can contain both accepted and rejected authentication activity, the command can capture successful and unsuccessful events associated with User1.
sssd is not the general authentication log path shown in the scenario and may contain only SSSD-specific events. A faillog-oriented source emphasizes failed logins and therefore does not satisfy the requirement to collect both successful and failed activity. /var/log/syslog contains broad system messages but is less precise than the dedicated authentication log.
Study Guide Reference: Security Operations # Linux Log Analysis # /var/log/auth.log # cat # grep # Output Redirection # Authentication Investigation.

NEW QUESTION # 135
A vulnerability analyst must perform a security assessment on an edge device running various services. The analyst runs an Nmap port scan and sees the following output:

Which of the following should the analyst do next to validate the discovered remote access service is secure?

A. Verify that the web server can be pinged.
B. Verify that the web server certificate is added to certificate store.
C. Verify that the virtual private network (VPN) service is utilizing Main Mode.
D. Verify that the Border Gateway Protocol (BGP) route has been published.

Answer: C

Explanation:
Open UDP port 500 indicates ISAKMP/IKE, commonly used by IPsec VPNs. Main Mode provides a more secure IKE negotiation by protecting peer identity information.

NEW QUESTION # 136
An analyst executes the top command on a Linux system for an unresponsive application and observes the following output:

Which of the following is the most likely cause of this issue?

A. Service disruption
B. Filesystem changes
C. Unauthorized software
D. Resource exhaustion

Answer: D

Explanation:
The python process is consuming 91.2% CPU and 96% memory, exhausting system resources and causing the application to become unresponsive.

NEW QUESTION # 137
A vulnerability analyst runs a credentialed vulnerability scan covering all addressable enterprise assets. After running the scan, the analyst discovers a large number of critical vulnerabilities that cannot be immediately remediated.
Which of the following are the most likely reasons why the vulnerabilities cannot be immediately addressed?

A. Legacy and proprietary systems, a lack of patch availability, and vendor dependencies
B. Inaccurate asset inventory, a lack of system documentation, and an absence of authorization
C. Physical access challenges, the absence of vendor support, and a lack of system documentation
D. Lack of technical skills, the absence of a test environment, and the absence of an asset inventory

Answer: A

Explanation:
Legacy and proprietary systems, unavailable patches, and vendor dependencies are classic technical and operational inhibitors to immediate vulnerability remediation. A legacy application may require obsolete libraries or operating systems that cannot accept modern updates. Proprietary platforms may permit changes only through an approved manufacturer or integrator, while certain vulnerabilities simply have no patch available when they are initially disclosed.
CISA guidance emphasizes continuously monitoring vendor vulnerability and patch announcements because remediation frequently depends on vendor-provided updates. CISA and NIST guidance also recognizes that systems remaining in service after vendor support ends create significant vulnerability-management challenges because patches may no longer be produced.
Option A is weakened by "absence of an asset inventory" because the scenario states that the credentialed scan already covers all addressable enterprise assets; inventory quality can affect management, but it does not best explain why identified critical findings cannot be patched. Options B and C contain possible administrative difficulties, yet they are less directly tied to widespread remediation constraints.
When immediate remediation is impossible, analysts should document the exception, assess risk, apply compensating controls where feasible, monitor affected systems, and establish a migration or vendor- remediation plan.
Study Guide Reference: Vulnerability Management # Remediation Constraints # Legacy/Proprietary Systems # Patch Availability # Vendor Dependencies # Compensating Controls # Risk Acceptance/Exception Management.

NEW QUESTION # 138
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