A corrective control is a control that aims to restore normal operations after a disruption or incident has occurred. Executing emergency response plans is an example of a corrective control, as it helps to mitigate the impact of an incident and resume business functions. Separating equipment development testing and production is a preventive control, as it helps to avoid errors or unauthorized changes in production systems.
Verifying duplicate calculations in data processing is a detective control, as it helps to identify errors or anomalies in data processing. Reviewing user access rights for segregation is also a detective control, as it helps to detect any violations of segregation of duties principles. References: ISACA, CISA Review Manual,
27th Edition, 2018, page 64

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

The observation that should be of most concern to the auditor when reviewing security controls related to collaboration tools for a business unit responsible for intellectual property and patents is that employees can share files with users outside the company through collaboration tools. Collaboration tools are software or hardware devices that enable users to communicate, cooperate, and coordinate with each other on a common task or project. Collaboration tools can facilitate information sharing and knowledge exchange among users, but they can also pose security risks if not properly controlled or managed. Employees can share files with users outside the company through collaboration tools, as this can compromise the security and confidentiality of intellectual property and patents, which are valuable and sensitive assets of the organization. Employees may share files with unauthorized or untrusted users who may misuse or disclose the intellectual property and patents, either intentionally or unintentionally. This can cause harm or damage to the organization, such as loss of competitive advantage, reputation, revenue, or legal rights. Training was not provided to the department that handles intellectual property and patents is a possible observation that could indicate a security issue related to collaboration tools for a business unit responsible for intellectual property and patents, but it is not the most concerning one. Training is an activity that educates and instructs users on how to use collaboration tools effectively and securely, such as how to access, share, store, and protect information using collaboration tools. Training was not provided to the department that handles intellectual property and patents, as this can affect the awareness and competence of users on collaboration tools, and increase the likelihood of errors or mistakes that may compromise the security or quality of information. However, this observation may not be directly related to collaboration tools, as it may apply to any information system or resource used by the department. Logging and monitoring for content filtering is not enabled is a possible observation that could indicate a security issue related to collaboration tools for a business unit responsible for intellectual property and patents, but it is not the most concerning one. Logging and monitoring are processes that record and analyze the events or activities that occur on an information system or network, such as user actions, system operations, data changes, errors, alerts, etc. Content filtering is a technique that blocks or allows access to certain types of information based on predefined criteria or rules, such as keywords, categories, sources, etc. Logging and monitoring for content filtering is not enabled, as this can affect the auditability, accountability, and visibility of collaboration tools, and prevent detection or investigation of security incidents or violations related to information sharing using collaboration tools. However, this observation may not be specific to collaboration tools, as it may affect any information system or network that uses content filtering. The collaboration tool is hosted and can only be accessed via an Internet browser is a possible observation that could indicate a security issue related to collaboration tools for a business unit responsible for intellectual property and patents, but it is not the most concerning one. A hosted collaboration tool is a type of cloud-based service that provides collaboration functionality over the Internet without requiring installation or maintenance on local devices. An Internet browser is a software application that enables users to access and interact with web-based content or services. The collaboration tool is hosted and can only be accessed via an Internet browser, as this can affect the availability and reliability of collaboration tools, and introduce security or privacy risks for information sharing using collaboration tools. However, this observation may not be unique to collaboration tools, as it may apply to any cloud-based service that uses an Internet browser.

The best way to validate that appropriate security controls are in place to prevent data loss is to review compliance with data loss and applicable mobile device user acceptance policies. This will ensure that the organization has established clear rules and guidelines for employees to follow when connecting their personal devices to company-owned computers. A walk-through, a DLP tool configuration, and a security awareness training are not sufficient to validate the effectiveness of the controls, as they may not cover all possible scenarios and risks. References: IT Audit Fundamentals Certificate Resources