The primary objective of performing a vulnerability assessment following a business system update is to review the effectiveness of controls. A vulnerability assessment is a systematic review of security weaknesses in an information system. It evaluates if the system is susceptible to any known vulnerabilities, assigns severity levels to those vulnerabilities, and recommends remediation or mitigation, if and whenever needed1. A business system update is a process of modifying or enhancing an information system to improve its functionality, performance, security, or compatibility. A business system update may introduce new features, fix bugs, patch vulnerabilities, or comply with new standards or regulations2. Performing a vulnerability assessment following a business system update is important because it helps to:
* Review the effectiveness of controls that are implemented to protect the information sys-tem from threats and risks
* Identify any new or residual vulnerabilities that may have been introduced or exposed by the update
* Evaluate the impact and likelihood of potential incidents that may exploit the vulnerabili-ties
* Prioritize and implement appropriate actions to address the vulnerabilities
* Verify and validate the security posture and compliance of the updated information sys-tem Therefore, the primary objective of performing a vulnerability assessment following a business system update is to review the effectiveness of controls that are designed to ensure the confidentiality, integrity, and availability of the information system and its dat a. The other options are not the primary objectives of performing a vulnerability as-sessment following a business system update. Determining operational losses is not an objective, but rather a possible consequence of not performing a vulnerability as-sessment or not addressing the identified vulnerabilities. Improving the change control process is not an objective, but rather a possible outcome of performing a vulnerability assessment and incorporating its results and recommendations into the change man-agement cycle. Updating the threat landscape is not an objective, but rather a prereq-uisite for performing a vulnerability assessment that requires using up-to-date sources of threat intelligence and vulnerability information. Reference: 1: Vulnerability As-sessment - NIST 2: System Update - Techopedia : Vulnerability Assessment vs Penetra-tion Testing - Imperva : Change Control Process - NIST : Threat Landscape - NIST

The best way to reduce the risk associated with a bring your own device (BYOD) program is to implement a mobile device policy and standard. This policy should include guidelines and rules regarding the use of mobile devices, such as acceptable use guidelines and restrictions on the types of data that can be stored or accessed on the device. Additionally, it should also include requirements for secure mobile device practices, such as the use of strong passwords, encryption, and regular patching. A mobile device management (MDM) solution can also be implemented to help ensure mobile devices meet the organizational security requirements. However, it is not enough to simply implement the policy and MDM solution; employees must also be trained on the secure mobile device practices to ensure the policy is followed.