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ISACA CCOA 認定試験の出題範囲：

トピック
出題範囲

トピック 1

• Securing Assets: This section of the exam measures skills of a Cybersecurity Specialist and covers the methods and strategies used to secure organizational assets. It includes topics like endpoint security, data protection, encryption techniques, and securing network infrastructure. The goal is to ensure that sensitive information and resources are properly protected from external and internal threats.

トピック 2

• Incident Detection and Response: This section of the exam measures the skills of a Cybersecurity Analyst and focuses on detecting security incidents and responding appropriately. It includes understanding security monitoring tools, analyzing logs, and identifying indicators of compromise. The section emphasizes how to react to security breaches quickly and efficiently to minimize damage and restore operations.

トピック 3

• Technology Essentials: This section of the exam measures skills of a Cybersecurity Specialist and covers the foundational technologies and principles that form the backbone of cybersecurity. It includes topics like hardware and software configurations, network protocols, cloud infrastructure, and essential tools. The focus is on understanding the technical landscape and how these elements interconnect to ensure secure operations.

トピック 4

• Adversarial Tactics, Techniques, and Procedures: This section of the exam measures the skills of a Cybersecurity Analyst and covers the tactics, techniques, and procedures used by adversaries to compromise systems. It includes identifying methods of attack, such as phishing, malware, and social engineering, and understanding how these techniques can be detected and thwarted.

トピック 5

• Cybersecurity Principles and Risk: This section of the exam measures the skills of a Cybersecurity Specialist and covers core cybersecurity principles and risk management strategies. It includes assessing vulnerabilities, threat analysis, and understanding regulatory compliance frameworks. The section emphasizes evaluating risks and applying appropriate measures to mitigate potential threats to organizational assets.

 

>> CCOA全真問題集 <<

CCOA赤本合格率、CCOA試験勉強攻略

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ISACA Certified Cybersecurity Operations Analyst 認定 CCOA 試験問題 (Q81-Q86):

質問 # 81
Which of the following is a PRIMARY risk that can be introduced through the use of a site-to-site virtual private network (VPN) with a service provider?

• A. Gaps in visibility to user behavior
• B. Data exfiltration
• C. Loss of data integrity
• D. Denial of service (DoS) attacks

正解：A

解説：
Site-to-site VPNs establish secure, encrypted connections between two networks over the internet, typically used to link corporate networks with remote sites or a service provider's network. However, while these VPNs secure data transmission, they introduce specific risks.
Theprimary riskassociated with a site-to-site VPN with a service provider is theloss of visibility into user behavior. Here's why:
* Limited Monitoring:Since the traffic is encrypted and routed through the VPN tunnel, the organization may lose visibility over user activities within the service provider's network.
* Blind Spots in Traffic Analysis:Security monitoring tools (like IDS/IPS) that rely on inspecting unencrypted data may be ineffective once data enters the VPN tunnel.
* User Behavior Analytics (UBA) Issues:It becomes challenging to track insider threats or compromised accounts due to the encapsulation and encryption of network traffic.
* Vendor Dependency:The organization might depend on the service provider's security measures to detect malicious activity, which may not align with the organization's security standards.
Other options analysis:
* A. Loss of data integrity:VPNs generally ensure data integrity using protocols like IPsec, which validates packet integrity.
* C. Data exfiltration:While data exfiltration can occur, it is typically a consequence of compromised credentials or insider threats, not a direct result of VPN usage.
* D. Denial of service (DoS) attacks:While VPN endpoints can be targeted in a DoS attack, it is not the primaryrisk specific to VPN use with a service provider.
CCOA Official Review Manual, 1st Edition References:
* Chapter 4: Network Security Operations:Discusses risks related to VPNs, including reduced visibility.
* Chapter 7: Security Monitoring and Incident Detection:Highlights the importance of maintaining visibility even when using encrypted connections.
* Chapter 8: Incident Response and Recovery:Addresses challenges related to VPN monitoring during incidents.

 

質問 # 82
A bank employee is found to beexfiltrationsensitive information by uploading it via email. Which of the following security measures would be MOST effective in detecting this type of insider threat?

• A. Security information and event management (SIEM)
• B. Network segmentation
• C. Intrusion detection system (IDS)
• D. Data loss prevention (DIP)

正解：D

解説：
Data Loss Prevention (DLP) systems are specifically designed to detect and prevent unauthorized data transfers. In the context of an insider threat, where a bank employee attempts toexfiltrate sensitive information via email, DLP solutions are most effective because they:
* Monitor Data in Motion:DLP can inspect outgoing emails for sensitive content based on pre-defined rules and policies.
* Content Inspection and Filtering:It examines email attachments and the body of the message for patterns that match sensitive data (like financial records or PII).
* Real-Time Alerts:Generates alerts or blocks the transfer when sensitive data is detected.
* Granular Policies:Allows customization to restrict specific types of data transfers, including via email.
Other options analysis:
* B. Intrusion detection system (IDS):IDS monitors network traffic for signs of compromise but is not designed to inspect email content or detect data exfiltration specifically.
* C. Network segmentation:Reduces the risk of lateral movement but does not directly monitor or prevent data exfiltration through email.
* D. Security information and event management (SIEM):SIEM can correlate events and detect anomalies but lacks the real-time data inspection that DLP offers.
CCOA Official Review Manual, 1st Edition References:
* Chapter 5: Insider Threats and Mitigation:Discusses how DLP tools are essential for detecting data exfiltration.
* Chapter 6: Threat Intelligence and Analysis:Covers data loss scenarios and the role of DLP.
* Chapter 8: Incident Detection and Response:Explains the use of DLP for detecting insider threats.

 

質問 # 83
Your enterprise has received an alert bulletin fromnational authorities that the network has beencompromised at approximately 11:00 PM (Absolute) onAugust 19, 2024. The alert is located in the alerts folderwith filename, alert_33.pdf.
What is the name of the suspected malicious filecaptured by keyword process.executable at 11:04 PM?

正解：

解説：
See the solution in Explanation.
Explanation:
To identify the name of the suspected malicious file captured by the keyword process.executable at11:04 PM onAugust 19, 2024, follow these detailed steps:
Step 1: Access the Alert Bulletin
* Locate the alert file:
* Access thealerts folderon your system.
* Look for the file named:
* Open the file:
* Use a PDF reader to examine the contents.
Step 2: Understand the Alert Context
* The bulletin indicates that the network was compromised at around11:00 PM.
* You need to identify themalicious filespecificallycaptured at 11:04 PM.
Step 3: Access System Logs
* Use yourSIEMorlog management systemto examine recent logs.
* Filter the logs to narrow down the events:
* Time Frame:August 19, 2024, from11:00 PM to 11:10 PM.
* Keyword:process.executable.
Example SIEM Query:
index=system_logs
| search "process.executable"
| where _time between "2024-08-19T23:04:00" and "2024-08-19T23:05:00"
| table _time, process_name, executable_path, hash
Step 4: Analyze Log Entries
* The query result should show log entries related to theprocess executablethat was triggered at11:04 PM
.
* Focus on entries that:
* Appear unusual or suspicious.
* Match known indicators from thealert bulletin (alert_33.pdf).
Example Log Output:
_time process_name executable_path hash
2024-08-19T23:04 evil.exe C:UsersPublicevil.exe 4d5e6f...
Step 5: Cross-Reference with Known Threats
* Check the hash of the executable file against:
* VirusTotalor internal threat intelligence databases.
* Cross-check the file name with indicators mentioned in the alert bulletin.
Step 6: Final Confirmation
* The suspected malicious file captured at11:04 PMis the one appearing in the log that matches the alert details.
The name of the suspected malicious file captured by keyword process.executable at 11:04 PM is: evil.exe Step 7: Take Immediate Remediation Actions
* Isolate the affected hostto prevent further damage.
* Quarantine the malicious filefor analysis.
* Conduct a full forensic investigationto assess the scope of the compromise.
* Update threat signaturesand indicators across the environment.
Step 8: Report and Document
* Document the incident, including:
* Time of detection:11:04 PM on August 19, 2024.
* Malicious file name:evil.exe.
* Location:C:UsersPublicevil.exe.
* Generate an incident reportfor further investigation.

 

質問 # 84
After identified weaknesses have been remediated, which of the following should be completed NEXT?

• A. Perform software code testing.
• B. Perform a software quality assurance (QA) activity.
• C. Move the fixed system directly to production.
• D. Perform a validation scan before moving to production.

正解：D

解説：
After remediation of identified weaknesses, thenext step is to perform a validation scanto ensure that the fixes were successful and no new vulnerabilities were introduced.
* Purpose:Confirm that vulnerabilities have been properly addressed.
* Verification:Uses automated tools or manual testing to recheck the patched systems.
* Risk Management:Prevents reintroducing vulnerabilities into the production environment.
Incorrect Options:
* B. Software code testing:Typically performed during development, not after remediation.
* C. Software quality assurance (QA) activity:Focuses on functionality, not security validation.
* D. Moving directly to production:Risks deploying unvalidated fixes.
Exact Extract from CCOA Official Review Manual, 1st Edition:
Refer to Chapter 6, Section "Post-Remediation Activities," Subsection "Validation Scans" - Validating fixes ensures security before moving to production.

 

質問 # 85
Which of the following would BCST enable an organization to prioritize remediation activities when multiple vulnerabilities are identified?

• A. Vulnerability exception process
• B. Risk assessment
• C. Business Impact analysis (BIA)
• D. executive reporting process

正解：B

解説：
Arisk assessmentenables organizations toprioritize remediation activitieswhen multiple vulnerabilities are identified because:
* Contextual Risk Evaluation:Assesses the potential impact and likelihood of each vulnerability.
* Prioritization:Helps determine which vulnerabilities pose the highest risk to critical assets.
* Resource Allocation:Ensures that remediation efforts focus on the most significant threats.
* Data-Driven Decisions:Uses quantitative or qualitative metrics to support prioritization.
Other options analysis:
* A. Business Impact Analysis (BIA):Focuses on the impact of business disruptions, not directly on vulnerabilities.
* B. Vulnerability exception process:Manages known risks but does not prioritize them.
* C. Executive reporting process:Summarizes security posture but does not prioritize remediation.
CCOA Official Review Manual, 1st Edition References:
* Chapter 5: Risk Assessment Techniques:Emphasizes the importance of risk analysis in vulnerability management.
* Chapter 7: Prioritizing Vulnerability Remediation:Guides how to rank threats based on risk.

 

質問 # 86
......

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