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CompTIA CS0-004 Exam Syllabus Topics:

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

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam 認定 CS0-004 試験問題 (Q61-Q66):

質問 # 61
Which of the following best explains the purpose of the Pyramid of Pain in threat intelligence?

A. To show that changing to different types of indicators and behaviors is difficult for an adversary
B. To compare open-source intelligence (OSINT) with closed-source intelligence based on collection cost
C. To measure how much operational damage a threat actor can cause before detection occurs
D. To organize attack activity into categories such as spoofing, tampering, and repudiation

正解：A

解説：
The Pyramid of Pain ranks indicators by how difficult they are for an attacker to replace. IP addresses and hashes are easy to change, while tools and TTPs are much harder.

質問 # 62
An analyst receives the following output:

Which of the following is the correct number of discovered systems that are allowing unencrypted traffic?

A. 0
B. 1
C. 2
D. 3

正解：A

解説：
The scan results identify two systems exposing services that permit communications without transport encryption, making B the correct count. The analyst must examine each discovered service rather than merely count open ports, because the security property being evaluated is whether the identified protocol transmits its session or application data without adequate encryption.
Common examples include HTTP instead of HTTPS, Telnet instead of SSH, and legacy FTP rather than protected file-transfer alternatives. The presence of an unencrypted service does not automatically prove that sensitive information is currently being transmitted, but it identifies a configuration that can expose credentials, commands, session content, or application data to interception when used.
The correct vulnerability-management workflow is to map discovered ports to services, determine the security characteristics of those protocols, verify whether encryption is available and enforced, and then prioritize remediation according to asset exposure and business requirements. Where possible, administrators should disable unnecessary cleartext services or replace them with cryptographically protected equivalents.
This question therefore tests interpretation of vulnerability or port-scan output , not simple arithmetic.
The two affected systems are those whose discovered services permit cleartext communications.
Study Guide Reference: Vulnerability Management # Scan Result Interpretation # Ports and Protocols # Cleartext Services # Encryption in Transit # Remediation and Secure Configuration.

質問 # 63
An incident response team identifies a malicious uniform resource locator (URL) associated with a required business process and performs the following activities:
- Access to the URL has been restricted only to the necessary users
through firewall rules and Cloud Security Group rules.
- Additional monitoring has been enabled for traffic related to that
site and the allowed users.
- All application servers that need to access that site have been
patched with the latest security and software updates.
- Application owners have been notified of the severity and need to
remediate this reported issue.
Which of the following best describes the overall mitigation the security team is performing?

A. Compensating controls
B. Configuration management
C. Patching solutions
D. Attack surface management

正解：A

解説：
The malicious URL cannot be completely blocked because it supports a required business process, so the team is applying alternative safeguards-restricted access, monitoring, patching, and notifications-to reduce the risk.

質問 # 64
A binary file that might contain malicious code is hosted on an isolated machine. An analyst wants to quickly detect the malicious code. Which of the following should the analyst use?

A. WHOIS
B. VirusTotal
C. Yet Another Recursive Acronym (YARA)
D. strings

正解：C

解説：
YARA scans files locally for patterns and signatures associated with known malware. It is appropriate for an isolated system, whereas VirusTotal requires uploading or querying the file online.

質問 # 65
A security operations center analyst receives an alert from the security information and event management system. The analyst quickly reviews the alert and sees a workstation infected with malware. The analyst then uses the endpoint detection and response tool to isolate the workstation from the network.
Which of the following best describes the steps that occurred in this scenario?

A. Isolation, mitigation, and analysis
B. Detection, analysis, and containment
C. Analysis, containment, and eradication
D. Analysis, eradication, and recovery

正解：B

解説：
The sequence is detection, analysis, and containment . First, the SIEM generates an alert indicating potentially malicious activity. This represents detection because the security monitoring infrastructure has identified a condition requiring investigation.
The analyst then reviews the alert and determines that the workstation is infected with malware. That validation and interpretation constitute analysis . Analysis establishes whether an alert represents a true incident, determines affected assets, and develops sufficient understanding to choose an appropriate response.
Finally, the analyst uses the EDR platform to isolate the workstation from the network. Isolation is a classic containment action because it prevents the infected endpoint from communicating with other systems, spreading malware, exfiltrating data, or maintaining command-and-control communications while the investigation continues.
Eradication has not yet occurred because the scenario does not indicate that the malware, persistence, compromised credentials, or root cause has been removed. Recovery also has not occurred because the system has not been restored to normal service.
NIST's current incident-response model explicitly emphasizes Detect, Respond, and Recover and includes containment and eradication within incident-response activities.
Study Guide Reference: Incident Response and Management # Detection # Analysis # Containment # Endpoint Isolation # Eradication # Recovery.

質問 # 66
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