Isaca Updated CRISC Exam Questions and Answers by millie-mae

When assessing the likelihood that a recently discovered software vulnerability will be exploited, the most important consideration is the skill level required of a threat actor. Here's an explanation:

Skill Level of Threat Actors:

The skill level required to exploit a vulnerability determines how accessible the exploit is to potential attackers.

If a vulnerability requires advanced technical skills to exploit, it is less likely to be targeted by less sophisticated attackers.

Conversely, if the exploit can be easily executed with minimal skills, it increases the likelihood of widespread exploitation.

Factors Influencing Likelihood of Exploitation:

Availability of Exploit Tools:If automated tools or scripts are available to exploit the vulnerability, even less skilled attackers can take advantage of it.

Publication of Exploit Details:If the vulnerability and its exploitation method are widely published, it becomes more accessible to a broader range of attackers.

Assessment of Likelihood:

Security teams assess the skill level required by analyzing whether the exploit is straightforward or complex.

They also consider the presence of exploit kits in the wild that could lower the barrier to entry for potential attackers.

Comparison with Other Factors:

Amount of PII Disclosed:While important, it relates more to the impact rather than the likelihood of exploitation.

Ability to Detect and Trace:This is crucial for response but does not directly influence the likelihood of exploitation.

Amount of Data Exposed:Similar to PII, this factor pertains to the impact rather than the likelihood of exploitation.

 Role of the System Owner:

The system owner is responsible for the overall operation and management of an application or system. This includes ensuring that technical controls are implemented and functioning as intended.

They have detailed knowledge of the system's architecture, the controls in place, and how those controls are applied within the system.

 Effectiveness of Technical Controls:

Assessing the effectiveness of a technical control requires understanding its implementation, configuration, and operational context.

The system owner is best positioned to provide this information as they manage and oversee the technical environment of the application.

 Comparing Other Roles:

Internal Auditor:While auditors review and evaluate the effectiveness of controls, they do so from an independent standpoint and might not have detailed, day-to-day operational insights.

Process Owner:The process owner focuses on business processes rather than technical controls specific to an application.

Risk Owner:The risk owner is responsible for managing risk but may not have the technical expertise or detailed operational knowledge of the system.

 Supporting Information:

According to the CRISC Review Manual, the system owner is often involved in the assessment and reporting of control effectiveness, especially regarding technical controls (CRISC Review Manual, Chapter 3: Risk Response and Mitigation, Section 3.1.3 Assessing Control Effectiveness) .

A decision tree is a technique that can be used during a risk assessment to demonstrate to stakeholders that all known alternatives were evaluated. A decision tree is a graphical tool that shows the possible outcomes and consequences of different choices or actions in a sequential and hierarchical manner. A decision tree can help to compare and contrast the alternatives based on their expected values, costs, benefits, and risks, as well as to identify the optimal or preferred alternative that maximizes the value or minimizes the risk. A decision tree can also help to communicate and explain the rationale and assumptions behind the decision-making process to the stakeholders. The other options are not the best techniques to demonstrate to stakeholders that all known alternatives were evaluated, although they may be useful and complementary. A control chart is a technique that monitors the performance and quality of a process or activity over time by plotting the data points and the control limits. A control chart can help to detect and analyze the variations or deviations from the expected or desired results, as well as to identify and correct the causes or sources of the variations. A sensitivity analysis is a technique that measures the impact ofchanges in one or more variables or parameters on the outcome or result of a model or a system. A sensitivity analysis can help to assess the uncertainty or variability of the outcome or result, as well as to determine the most influential or critical variables or parameters that affect the outcome or result. A trend analysis is a technique that examines the patterns or movements of data or information over time by using statistical or graphical methods. A trend analysis can help to forecast or predict the future behavior or direction of the data or information, as well as to identify and explain the factors or drivers that influence the data or information. References = CRISC Review Manual, pages 38-391; CRISC ReviewQuestions, Answers &Explanations Manual, page 922; Risk Assessment and Analysis Methods: Qualitative and Quantitative - ISACA3; Risk Assessment: Process, Examples, & Tools | SafetyCulture4