3. An enterprise security system continuously monitors user behavior and network activity, dynamically adjusting authentication requirements based on risk factors rather than assuming ongoing access. Which security principle is being applied?
Answer: C
Zero trust
The security principle being applied is zero trust, which emphasizes the need for continuous verification of user identity and access rights based on real-time risk assessments. This approach ensures that access is not granted automatically and is contingent upon current conditions.
A) Least privilege
Least privilege refers to the principle of providing users with the minimum level of access necessary to perform their duties. While this concept is related to security, it does not encompass the dynamic and continuous assessment of user behavior and network activity that zero trust entails.
B) Separation of privilege
Separation of privilege involves requiring multiple components or actions to gain access to sensitive resources, thereby reducing the risk of unauthorized access. Although it enhances security, it does not specifically address the ongoing monitoring and adjustment of authentication requirements based on risk, which is central to the zero trust model.
C) Zero trust
Zero trust is characterized by its focus on continuous monitoring and validation of user access and behavior, ensuring that permissions are dynamically adjusted based on real-time assessment of risk factors. This principle fundamentally changes the assumption of trust in network environments, making it the correct answer in this context.
D) Psychological acceptability
Psychological acceptability refers to designing security measures in a way that they are user-friendly and do not hinder productivity. While important for user compliance, this principle does not relate to the continuous monitoring and risk-based adjustments inherent in the zero trust framework.
Conclusion
Zero trust is the definitive correct answer as it encapsulates the principle of continuously monitoring user behavior and dynamically adjusting access requirements based on risk. In contrast, the other options focus on static access controls or user experience, which do not address the proactive and adaptive nature of security that zero trust embodies.