CISA-KR 문제 211
다음 중 방화벽 로그의 무결성을 가장 확실하게 보장하는 것은 무엇입니까?
정답: C
The best way to provide assurance of the integrity of a firewall log is to ensure that the log cannot be modified. A firewall log is a record of the traffic and events that occur at the firewall, which is a device or software that controls and filters the incoming and outgoing network traffic based on predefined rules and policies. The integrity of a firewall log means that the log is accurate, complete, consistent, and valid, and that it has not been altered, deleted, or corrupted by unauthorized or malicious parties. The IS auditor should verify that the firewall log has adequate controls to prevent or detect any modification of the log, such as encryption, hashing, digital signatures, write-once media, or tamper-evident seals. The other options are not as effective as ensuring that the log cannot be modified, because they either do not address the integrity of the log data, or they are monitoring or retention measures rather than preventive or detective controls. References: CISA Review Manual (Digital Version)1, Chapter 5, Section 5.2.4
CISA-KR 문제 212
내년에 어떤 IS 감사를 수행할지 선택하는 주요 기준은 무엇입니까?
정답: C
The primary basis for selecting which IS audits to perform in the coming year is the organizational risk assessment. An organizational risk assessment is a formal process for identifying, evaluating, and controlling risks that may affect the achievement of the organization'sgoals and objectives3. An organizational risk assessment can help IS auditors prioritize and plan their audit activities based on the level of risk exposure and impact of each area or process within the organization. An organizational risk assessment can also help IS auditors align their audit objectives and criteria with the organization's strategy and performance indicators.
Senior management's request, prior year's audit findings, and previous audit coverage and scope are also possible bases for selecting which IS audits to perform in the coming year, but not as primary as the organizational risk assessment. These factors are more secondary or supplementary sources of information that can help IS auditors refine or adjust their audit plan based on specific needs or issues identified by management or previous audits. However, thesefactors may not reflect the current or emerging risks that may affect the organization's operations or performance. References: ISACA CISA Review Manual 27th Edition, page 295
Senior management's request, prior year's audit findings, and previous audit coverage and scope are also possible bases for selecting which IS audits to perform in the coming year, but not as primary as the organizational risk assessment. These factors are more secondary or supplementary sources of information that can help IS auditors refine or adjust their audit plan based on specific needs or issues identified by management or previous audits. However, thesefactors may not reflect the current or emerging risks that may affect the organization's operations or performance. References: ISACA CISA Review Manual 27th Edition, page 295
CISA-KR 문제 213
데이터 센터에 대한 위협 평가를 검토하는 IS 감사원은 다음과 같은 경우 가장 우려할 것입니다.
정답: C
An IS auditor reviewing the threat assessment for a data center would be most concerned if the exercise was completed by local management, because this could introduce bias, conflict of interest, or lack of expertise in the assessment process. A threat assessment is a systematic method of identifying and evaluating the potential threats that could affect the availability, integrity, or confidentiality of the data center and its assets. A threat assessment should be conducted by an independent and qualified team that has the necessary skills, knowledge, and experience to perform a comprehensive and objective analysis of the data center's environment, vulnerabilities, and risks1.
The other options are not as concerning as option C for an IS auditor reviewing the threat assessment for a data center. Option A, some of the identified threats are unlikely to occur, is not a problem as long as the likelihood and impact of each threat are properly estimated and prioritized. A threat assessment should consider all possible scenarios, even if they have a low probability of occurrence, to ensure that the data center is prepared for any eventuality2. Option B, all identified threats relate to external entities, is not a flaw as long as the assessment also considers internal threats, such as human errors, malicious insiders, or equipment failures. External threats are often more visible and severe than internal threats, but they are not the only source of risk for a data center3. Option D, neighboring organizations' operations have been included, is not a mistake as long as the assessment also focuses on the data center's own operations. Neighboring organizations' operations may have an impact on the data center's security and availability, especially if they share physical or network infrastructure or resources. A threat assessment should take into account the interdependencies and interactions between the data center and its external environment4.
References:
* ISACA, CISA Review Manual, 27th Edition, 2019
* ISACA, CISA Review Questions, Answers & Explanations Database - 12 Month Subscription
* Data Center Threats and Vulnerabilities1
* Datacenter threat, vulnerability, and risk assessment2
* Data Centre Risk Assessment3
The other options are not as concerning as option C for an IS auditor reviewing the threat assessment for a data center. Option A, some of the identified threats are unlikely to occur, is not a problem as long as the likelihood and impact of each threat are properly estimated and prioritized. A threat assessment should consider all possible scenarios, even if they have a low probability of occurrence, to ensure that the data center is prepared for any eventuality2. Option B, all identified threats relate to external entities, is not a flaw as long as the assessment also considers internal threats, such as human errors, malicious insiders, or equipment failures. External threats are often more visible and severe than internal threats, but they are not the only source of risk for a data center3. Option D, neighboring organizations' operations have been included, is not a mistake as long as the assessment also focuses on the data center's own operations. Neighboring organizations' operations may have an impact on the data center's security and availability, especially if they share physical or network infrastructure or resources. A threat assessment should take into account the interdependencies and interactions between the data center and its external environment4.
References:
* ISACA, CISA Review Manual, 27th Edition, 2019
* ISACA, CISA Review Questions, Answers & Explanations Database - 12 Month Subscription
* Data Center Threats and Vulnerabilities1
* Datacenter threat, vulnerability, and risk assessment2
* Data Centre Risk Assessment3
CISA-KR 문제 214
다음 중 조직의 데이터 분류 프로세스와 관련하여 가장 큰 우려 사항은 무엇입니까?
정답: D
CISA-KR 문제 215
데이터 소유자가 데이터에 잘못된 분류 수준을 지정한 경우 IS 감사자가 가장 우려해야 할 사항은 무엇입니까?
정답: A
The answer A is correct because the greatest concern for an IS auditor when a data owner assigns an incorrect classification level to data is that controls to adequately safeguard the data may not be applied. Data classification is the process of categorizing data assets based on their information sensitivity and business impact. Data classification helps organizations to identify, protect, and manage their data according to their value and risk. Data owners are the individuals or entities who have the authority and responsibility to define, classify, and control the access and use of their data.
Data classification typically involves assigning labels or tags to data assets, such as public, internal, confidential, or restricted. These labels indicate the level of protection and handling required for the data.
Based on the data classification, organizations can implement appropriate controls to safeguard the data, such as encryption, access control lists, audit logs, backup policies, etc. These controls help to prevent unauthorized access, disclosure, modification, or loss of data, and to ensure compliance with relevant laws and regulations.
If a data owner assigns an incorrect classification level to data, it can result in either underprotection or overprotection of the data. Underprotection means that the data is classified at a lower level than it should be, which exposes it to higher risks of compromise or breach. For example, if a data owner classifies personal health information (PHI) as public instead of confidential, it may allow anyone to access or share the data without proper authorization or consent. This can violate the privacy rights of the data subjects and the compliance requirements of regulations such as HIPAA (Health Insurance Portability and Accountability Act). Overprotection means that the data is classified at a higher level than it should be, which limits its availability or usability. For example, if a data owner classifies marketing materials as restricted instead of public, it may prevent potential customers or partners from accessing or viewing the data. This can reduce the business value and opportunities of the data.
Therefore, an IS auditor should be concerned about the accuracy and consistency of data classification by data owners, as it affects the security and efficiency of data management. An IS auditor should review the policies and procedures for data classification, verify that the data owners have adequate knowledge and skills to classify their data, and test that the data classification labels match with the actual sensitivity and impact of the data.
References:
* Data Classification: What It Is and How to Implement It
* What Is Data Classification? - Definition, Levels & Examples ...
* Data Classification: A Guide for Data Security Leaders
Data classification typically involves assigning labels or tags to data assets, such as public, internal, confidential, or restricted. These labels indicate the level of protection and handling required for the data.
Based on the data classification, organizations can implement appropriate controls to safeguard the data, such as encryption, access control lists, audit logs, backup policies, etc. These controls help to prevent unauthorized access, disclosure, modification, or loss of data, and to ensure compliance with relevant laws and regulations.
If a data owner assigns an incorrect classification level to data, it can result in either underprotection or overprotection of the data. Underprotection means that the data is classified at a lower level than it should be, which exposes it to higher risks of compromise or breach. For example, if a data owner classifies personal health information (PHI) as public instead of confidential, it may allow anyone to access or share the data without proper authorization or consent. This can violate the privacy rights of the data subjects and the compliance requirements of regulations such as HIPAA (Health Insurance Portability and Accountability Act). Overprotection means that the data is classified at a higher level than it should be, which limits its availability or usability. For example, if a data owner classifies marketing materials as restricted instead of public, it may prevent potential customers or partners from accessing or viewing the data. This can reduce the business value and opportunities of the data.
Therefore, an IS auditor should be concerned about the accuracy and consistency of data classification by data owners, as it affects the security and efficiency of data management. An IS auditor should review the policies and procedures for data classification, verify that the data owners have adequate knowledge and skills to classify their data, and test that the data classification labels match with the actual sensitivity and impact of the data.
References:
* Data Classification: What It Is and How to Implement It
* What Is Data Classification? - Definition, Levels & Examples ...
* Data Classification: A Guide for Data Security Leaders
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