The most important factor to include in the analysis of the policy exception is the risk associated with the inability to implement the multi-factor authentication requirement. A policy exception is a temporary or permanent deviation from the established policies or standards of the organization, due to various reasons, such as budget constraints, technical limitations, or business needs. A policy exception must be submitted and approved by the appropriate authority, and it must include a clear and comprehensive analysis of the rationale, impact, and mitigation of the exception. The risk associated with the inability to implement the multi-factor authentication requirement is the most important factor to include in the analysis, because it evaluates the probability and severity of potential threats or incidents that could exploit the lack of multi-factor authentication, such as unauthorized access, data breach, or identity theft. The risk analysis also helps to justify the need and urgency of the policy exception, and to propose alternative or compensating controls to reduce or transfer the risk, such as password policies, access restrictions, or encryption. The other options are not the most important factor, although they may be relevant or supportive to the policy exception analysis.
Sections of the policy that may justify not implementing the requirement are the clauses or provisions in the policy that allow or enable the policy exception, such as exemptions, waivers, or variances. These sections can help to validate the legitimacy and feasibility of the policy exception, but they do not assess the risk or the impact of the exception. Budget justification to implement the new requirement during the current year is the explanation and evidence of the financial resources and constraints that affect the implementation of the multi-factor authentication requirement. This justification can help to demonstrate the cost-benefit and return on investment of the requirement, but it does not measure the risk or the mitigation of the exception. Industry best practices with respect to implementation of the proposed control are the proven methods and standards that are adopted by the leading organizations in a specific field or sector for implementing the multi-factor authentication requirement. These best practices can help to benchmark and improve the quality and effectiveness of the requirement, but they do not quantify the risk or the impact of the exception. References
= Policy Exception Management - ISACA, Multi-Factor Authentication Policy - University of Arkansas, Common Conditional Access policy: Require MFA for all users