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CompTIA CS0-004 Exam Syllabus Topics:

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

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q88-Q93):

NEW QUESTION # 88
A security analyst runs an Nmap scan against a host with multiple open ports using the following command:
nmap 10.10.10.1 -p-
The following output is obtained after the scan:
Starting Nmap 7.95 ( https://nmap.org ) at 2025-07-15 15:55 UTC
Note: Host seems down.
Nmap done: 1 IP address (0 hosts up) scanned in 3.16 seconds
Which of the following is the most accurate way to scan the target IP for open ports?

A. nmap -p- -Pn 10.10.10.1
B. nmap 10.10.10.1 -p80, 443, 445, 9999, 135, 22, 21 -b --traceroute
C. nmap -sn -p- 10.10.10.1
D. nmap 10.10.10.1/24 -p- -R -O --script=ssl-enum-ciphers

Answer: A

Explanation:
The original scan fails because Nmap's host-discovery process concludes that the target appears offline before conducting the intended full port scan. Option C adds -Pn , instructing Nmap to skip normal host discovery and proceed with scanning the target as though it is online. The -p- option then instructs Nmap to test the complete TCP port range rather than only its default set.
This is appropriate when a live host does not respond to discovery probes because ICMP echo traffic or other discovery packets may be filtered by firewalls, host-based controls, or network policy. A system can therefore appear "down" to Nmap's discovery phase while still exposing reachable TCP services.
Option B uses -sn, which performs host discovery without a port scan and therefore contradicts the requirement. Option A scans only a limited set of explicitly identified ports and includes unrelated functionality. Option D unnecessarily changes the scope to an entire /24, performs operating-system detection and DNS resolution, and invokes an SSL cipher script; none of those modifications addresses the immediate host-discovery problem.
Study Guide Reference: Vulnerability Management # Nmap # Host Discovery # -Pn # Full Port Scanning - p- # Firewall/ICMP Filtering # Scan Troubleshooting.

NEW QUESTION # 89
A security analyst analyzes the output of a web application access log for a company based in the United States. Given the following output:

Which of the following users should be investigated first?

A. dmann
B. tlindy
C. jschott
D. mschultz

Answer: B

Explanation:
tlindy has a successful login from a Russian IP address between successful U.S.-based logins, indicating a potentially compromised account or impossible-travel activity. The other Russian login attempts shown were unsuccessful.

NEW QUESTION # 90
Which of the following is the most likely reason an organization might implement compensating controls?

A. A vulnerability was detected, but the organization has determined the result is a false positive.
B. A vulnerability has been fixed, tested, and deployed to production.
C. A vulnerability is being actively exploited in the wild, but the organization does not use the affected system.
D. A vulnerability does not have a patch, and the system is mission critical.

Answer: D

Explanation:
Compensating controls are appropriate when the preferred remediation cannot currently be implemented but the organization must still reduce exposure. A mission-critical system with an unpatched vulnerability for which no vendor patch exists is a classic example. The system cannot simply be removed from service because the business requires it, and conventional patching is unavailable.
The organization may therefore deploy alternative controls such as network segmentation, restrictive firewall rules, application allowlisting, disabling unnecessary services, enhanced monitoring, IPS signatures, access restrictions, or isolation of affected functionality. These measures do not eliminate the underlying defect; instead, they reduce the probability or impact of exploitation while a permanent solution is developed.
NIST's control framework is designed to allow security controls to be selected and tailored according to organizational mission requirements and risk, supporting the broader principle that organizations may apply appropriate alternative safeguards when operational constraints exist.
Option B requires no compensating control because remediation has already occurred. Option C describes a vulnerability that is not applicable to the organization's systems. Option D represents a false positive and therefore does not constitute an actual exposure requiring mitigation.
Study Guide Reference: Vulnerability Management # Mitigation # Compensating Controls # Patch Availability # Mission-Critical Systems # Segmentation and Monitoring.

NEW QUESTION # 91
A security analyst receives a notice about a possible data breach. The report identifies unapproved, current access dates for files found in the following personnel archives:

Which of the following actions should the analyst take first?

A. Establish a timeline.
B. Perform log correlation.
C. Reset user credentials.
D. Restore files from backup.
E. Establish a legal hold.

Answer: E

Explanation:
A legal hold preserves potentially relevant files, logs, and other evidence from alteration or deletion before the investigation proceeds.

NEW QUESTION # 92
A recent security audit found that RCE was possible for a specific application server that requires public access for HTTP and HTTPS traffic. Which of the following controls should a security analyst recommend?

A. Configuring a firewall rule to deny all inbound external traffic
B. Modifying the rules on the WAF to sanitize user input
C. Only allowing one application server to be publicly accessible
D. Creating an IAM policy so that only administrators can access the server

Answer: B

NEW QUESTION # 93
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