Wiping the device remotely is the best option to minimize the risk of data exposure from a stolen personal mobile device. This action will erase all the data stored on the device, including the sensitive corporate data, and prevent unauthorized access or misuse. Wiping the device remotely can be done using enterprise mobility management (EMM) or mobile device management (MDM) tools that allow administrators to remotely manage and secure mobile devices. Alternatively, some mobile devices have built-in features that allow users to wipe their own devices remotely using another device or a web portal.
Preventing the user from using personal mobile devices is not a feasible option, as it may affect the user's productivity and convenience. Moreover, this option does not address the immediate risk of data exposure from the stolen device.
Reporting the incident to the police is a good practice, but it does not guarantee that the device will be recovered or that the data will be protected. The police may not have the resources or the authority to track down the device or access it.
Removing the user's access to corporate data is a preventive measure that can limit the damage caused by a stolen device, but it does not eliminate the risk of data exposure from the data already stored on the device.
The user may have cached or downloaded data that can still be accessed by an attacker even if the user's access is revoked. References =
* Guidelines for Managing the Security of Mobile Devices in the Enterprise NIST Special Publication, Section 3.1.11, page 3-8
* CISM Review Manual, Chapter 3, page 121
* Mobile device security - CISM Certification Domain 2: Information Risk Management Video Boot Camp 2019, Section 3.3, 00:03:10

The program goals are communicated and understood by the organization is the most important factor for the effective implementation of an information security governance program because it ensures that the program is aligned with the business objectives and supported by the stakeholders. Employees receive customized information security training is not the most important factor, but rather a means to achieve the program goals and raise awareness among the staff. The program budget is approved and monitored by senior management is not the most important factor, but rather a resource to enable the program activities and measure its performance. Information security roles and responsibilities are documented is not the most important factor, but rather a way to define and assign the program tasks and accountabilities. References: https://www.isaca.
org/resources/isaca-journal/issues/2015/volume-1/how-to-measure-the-effectiveness-of-information-security- governance https://www.isaca.org/resources/isaca-journal/issues/2016/volume-2/how-to-align-security- initiatives-with-business-goals-and-objectives

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 data. 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. References: 1: Vulnerability As-sessment - NIST 2: System Update - Techopedia : Vulnerability Assessment vs Penetra-tion Testing - Imperva : Change Control Process - NIST :
Threat Landscape - NIST