Pass CISA Exam Guide

Automated version control systems are the best method to maintain an audit trail of changes made to the source code of a program. They automatically track and manage changes to the source code over time, allowing you to see what changes were made, when they were made, and who made them1. This provides a clear and detailed audit trail that can be invaluable for debugging, understanding the evolution of the code, and ensuring accountability23.

The correct answer is A. Overwriting multiple times. Overwriting is a method of securely erasing data from a hard disk by replacing the existing data with random or meaningless data, making it difficult or impossible to recover the original data1. Overwriting multiple times, also known as multiple-pass overwriting, is a more effective way of disposing of sensitive data than overwriting once, as it reduces the possibility of residual traces of data that could be recovered by advanced techniques2. Overwriting multiple times can be done by using specialized software tools that follow certain standards or algorithms, such as the US Department of Defense’s DoD 5220.22-M or the Gutmann method3.

The finding that should be of greatest concern to an IS auditor assessing the risk associated with end-user computing (EUC) in an organization is the lack of defined criteria for EUC applications. EUC applications are applications that are developed and maintained by end-users, rather than by IT professionals, to support their business functions and processes. Examples of EUC applications include spreadsheets, databases, reports, and scripts. The lack of defined criteria for EUC applications means that the organization does not have clear and consistent standards or guidelines to identify, classify, and manage EUC applications. This can lead to various risks, such as:

Inaccurate or unreliable data and results from EUC applications that are not validated, verified, or tested

Unauthorized or inappropriate access or use of EUC applications that are not secured, controlled, or monitored

Inconsistent or incompatible data and results from EUC applications that are not integrated, documented, or updated

Loss or corruption of data and results from EUC applications that are not backed up, recovered, or archived

Therefore, the IS auditor should be most concerned about the lack of defined criteria for EUC applications, as it can affect the quality, integrity, and availability of the EUC applications and the data they produce.

Insufficient processes to track ownership of each EUC application is a finding that should be of concern to an IS auditor assessing the risk associated with EUC in an organization, but it is not the greatest concern. The ownership of an EUC application refers to the person or group who is responsible for creating, maintaining, and using the EUC application. Insufficient processes to track ownership of each EUC application means that the organization does not have adequate mechanisms orrecords to identify and communicate who owns each EUC application. This can lead to risks, such as:

Lack of accountability or ownership for the quality and accuracy of the EUC application and its data

Lack of support or maintenance for the EUC application when the owner leaves or changes roles

Lack of awareness or training for the users of the EUC application on its purpose and functionality

However, these risks are less severe than those caused by the lack of defined criteria for EUC applications.

Insufficient processes to test for version control is a finding that should be of concern to an IS auditor assessing the risk associated with EUC in an organization, but it is not the greatest concern. Version control is a process that tracks and manages the changes made to an EUC application over time. Insufficient processes to test for version control means that the organization does not have adequate procedures or tools to ensure that the changes made to an EUC application are authorized, documented, and tested. This can lead to risks, such as:

Errors or inconsistencies in the data and results from different versions of the EUC application

Conflicts or confusion among the users of the EUC application on which version is current or correct

Loss or overwrite of data and results from previous versions of the EUC application

However, these risks are less severe than those caused by the lack of defined criteria for EUC applications.

Lack of awareness training for EUC users is a finding that should be of concern to an IS auditor assessing the risk associated with EUC in an organization, but it is not the greatest concern. Awareness training for EUC users is a process that educates and informs the users of the EUC applications on their roles, responsibilities, and risks. Lack of awareness training for EUC users means that the organization does not have adequate programs or materials to raise the knowledge and skills of the users on how to use and manage the EUC applications effectively and securely. This can lead to risks, such as:

Misuse or abuse of the EUC applications by users who are not aware of their impact or implications

Non-compliance or violation of policies or regulations by users who are not aware of their requirements or expectations

Dissatisfaction or frustration among users who are not aware of their benefits or limitations

However, these risks are less severe than those caused by the lack of defined criteria for EUC applications.