CISA-KR 문제 91
다음 중 회사 이메일을 통해 전송된 기밀 문서의 무단 공개를 감지하는 데 가장 적합한 방법은 무엇입니까?
정답: D
To detect unauthorized disclosure of confidential documents sent over corporate email, monitoring all emails based on pre-defined criteria is the best approach. This involves setting up automated monitoring systems that analyze email content, attachments, and metadata to identify any potential unauthorized disclosures. By defining specific criteria (such as keywords related to confidential information), organizations can proactively detect and prevent leaks. Requiring encryption before sending documents (option A) is important but does not address monitoring for unauthorized disclosures. Firewalls (option B) protect the network but do not specifically focus on email content. Reporting outgoing emails marked as confidential (option C) relies on user self-reporting and may not catch all incidents12. References: 1(https://www.isaca.org/resources/isaca- journal/past-issues/2010/data-governance-for-privacy-confidentiality-and-compliance-a-holistic-approach) 2 (https://www.isaca.org/resources/news-and-trends/newsletters/atisaca/2020/volume-6/best-practices-for- privacy-audits)
CISA-KR 문제 92
인시던트 대응팀은 네트워크 서브넷에서 바이러스가 발생했다는 통보를 받았습니다. 다음 중 다음 단계는 무엇이어야 합니까?
정답: B
An incident response team has been notified of a virus outbreak in a network subnet. The next step should be to focus on limiting the damage by containing the virus and preventing it from spreading further. This may involve isolating the affected systems, disconnecting them from the network, blocking malicious traffic or applying patches or antivirus updates. Verifying that the compromised systems are fully functional, documenting the incident and removing and restoring the affected systems are possible steps that could be taken after limiting the damage. References:
* : [Incident Response Definition]
* : [Incident Response Process | ISACA]
* : [Virus Definition]
* : [Incident Response Definition]
* : [Incident Response Process | ISACA]
* : [Virus Definition]
CISA-KR 문제 93
변경 관리 프로세스를 평가하는 IS 감사자는 변경 로그에서 샘플을 선택해야 합니다. 감사자가 변경 로그가 완료되었는지 확인하는 가장 좋은 방법은 무엇입니까?
정답: D
The answer D is correct because the best way for the auditor to confirm the change log is complete is to take the last change from the system and trace it back to the log. A change log is a record of all the changes that have been made to a system, such as software updates, bug fixes, configuration modifications, etc. A change log should contain information such as the date and time of the change, the description and purpose of the change, the person or service who made the change, and the approval status of the change. A complete change log helps to ensure that the system is secure, reliable, and compliant with the relevant standards and regulations.
An IS auditor evaluating the change management process must select a sample from the change log to verify that the changes are properly authorized, documented, tested, and implemented. However, before selecting a sample, the auditor must ensure that the change log is complete and accurate, meaning that it contains all the changes that have been made to the system and that there are no missing, duplicated, or falsified entries. To do this, the auditor can use a technique called backward tracing, which involves taking the last change from the system and tracing it back to the log. This way, the auditor can check if the change is recorded in the log with all the relevant details and if there are any gaps or inconsistencies in the log. If the last change from the system is not found in the log or does not match with the log entry, it indicates that the change log is incomplete or inaccurate.
The other options are not as good as option D. Interviewing change management personnel about completeness (option A) is not a reliable way to confirm the change log is complete because it relies on subjective opinions and self-reported information, which may not be truthful or accurate. Taking an item from the log and tracing it back to the system (option B) is a technique called forward tracing, which can be used to verify that a specific change in the log has been implemented in the system. However, this technique does not confirm that all changes in the system are recorded in the log. Obtaining management attestation of completeness (option C) is not a sufficient way to confirm the change log is complete because it does not provide any evidence or verification of completeness. Management attestation may also be biased or influenced by conflicts of interest.
References:
* IS Audit Basics: Auditing Data Privacy
* Audit Logging: What It Is & How It Works | Datadog
* Change Management for SOC: Risks, Controls, Audits, Guidance
* Turn auditing on or off | Microsoft Learn
* #118 | ITGC- System Change (Audit) Log Review - A2Q2
An IS auditor evaluating the change management process must select a sample from the change log to verify that the changes are properly authorized, documented, tested, and implemented. However, before selecting a sample, the auditor must ensure that the change log is complete and accurate, meaning that it contains all the changes that have been made to the system and that there are no missing, duplicated, or falsified entries. To do this, the auditor can use a technique called backward tracing, which involves taking the last change from the system and tracing it back to the log. This way, the auditor can check if the change is recorded in the log with all the relevant details and if there are any gaps or inconsistencies in the log. If the last change from the system is not found in the log or does not match with the log entry, it indicates that the change log is incomplete or inaccurate.
The other options are not as good as option D. Interviewing change management personnel about completeness (option A) is not a reliable way to confirm the change log is complete because it relies on subjective opinions and self-reported information, which may not be truthful or accurate. Taking an item from the log and tracing it back to the system (option B) is a technique called forward tracing, which can be used to verify that a specific change in the log has been implemented in the system. However, this technique does not confirm that all changes in the system are recorded in the log. Obtaining management attestation of completeness (option C) is not a sufficient way to confirm the change log is complete because it does not provide any evidence or verification of completeness. Management attestation may also be biased or influenced by conflicts of interest.
References:
* IS Audit Basics: Auditing Data Privacy
* Audit Logging: What It Is & How It Works | Datadog
* Change Management for SOC: Risks, Controls, Audits, Guidance
* Turn auditing on or off | Microsoft Learn
* #118 | ITGC- System Change (Audit) Log Review - A2Q2
CISA-KR 문제 94
다음 중 웹 서버에 고객 데이터를 저장하는 데 따른 가장 큰 위험은 무엇입니까?
정답: B
The greatest risk associated with storing customer data on a web server is data confidentiality. Data confidentiality is the property that ensures that data are accessible only to authorized entities or individuals, and protected from unauthorized disclosure or exposure. Storing customer data on a web server poses a high risk to data confidentiality, as web servers are exposed to the internet and may be vulnerable to various types of attacks or breaches that can compromise the security and privacy of customer data, such as hacking, phishing, malware, denial of service (DoS), etc. Customer data may contain sensitive or personal information that can cause harm or damage to customers or the organization if disclosed or exposed, such as identity theft, fraud, reputation loss, legal liability, etc. Data availability is the property that ensures that data are accessible and usable by authorized entities or individuals when needed. Data availability is a risk associated with storing customer data on a web server, as web servers may experience failures or disruptions that can affect the accessibility and usability of customer data, such as hardware faults, network issues, power outages, etc.
However, data availability is not the greatest risk associated with storing customer data on a web server, as it does not affect the security and privacy of customer data. Data integrity is the property that ensures that data are accurate and consistent, and protected from unauthorized modification or corruption. Data integrity is a risk associated with storing customer data on a web server, as web servers may be subject to attacks or errors that can affect the accuracy and consistency of customer data, such as injection attacks, tampering, replication issues, etc. However, data integrity is not the greatest risk associated with storing customer data on a web server, as it does not affect the security and privacy of customer data. Data redundancy is the condition of having duplicate or unnecessary data in a database or system. Data redundancy is not a risk associated with storing customer data on a web server, but rather a result of poor database design or management.
However, data availability is not the greatest risk associated with storing customer data on a web server, as it does not affect the security and privacy of customer data. Data integrity is the property that ensures that data are accurate and consistent, and protected from unauthorized modification or corruption. Data integrity is a risk associated with storing customer data on a web server, as web servers may be subject to attacks or errors that can affect the accuracy and consistency of customer data, such as injection attacks, tampering, replication issues, etc. However, data integrity is not the greatest risk associated with storing customer data on a web server, as it does not affect the security and privacy of customer data. Data redundancy is the condition of having duplicate or unnecessary data in a database or system. Data redundancy is not a risk associated with storing customer data on a web server, but rather a result of poor database design or management.
CISA-KR 문제 95
새로 개발된 애플리케이션의 효과를 평가하는 가장 좋은 방법은 다음과 같습니다.
정답: D
The best way to evaluate the effectiveness of a newly developed application is to review acceptance testing results. Acceptance testing is a process of verifying that the application meets the specified requirements and expectations of the users and stakeholders. Acceptance testing results can provide evidence of the functionality, usability, reliability, performance, security and quality of the application. Performing a post- implementation review, analyzing load testing results, and performing a secure code review are also important activities for evaluating an application, but they are not as comprehensive or conclusive as acceptance testing results.
References: Info Technology & Systems Resources | COBIT, Risk, Governance ... - ISACA, IT Governance and Process Maturity
References: Info Technology & Systems Resources | COBIT, Risk, Governance ... - ISACA, IT Governance and Process Maturity
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