What kind of approach does "diversity of defense" encourage in security practices?

The "diversity of defense" approach emphasizes the importance of implementing multiple overlapping layers of protection within a security framework. This strategy is grounded in the understanding that relying on a single type of security measure can create weaknesses that adversaries may exploit. By utilizing various defense mechanisms, such as firewalls, intrusion detection systems, antivirus software, and physical security controls, organizations can create multiple barriers against a wide range of potential threats.

Each layer provides an additional line of defense, ensuring that if one layer is compromised, others remain intact to continue providing protection. This redundancy makes it significantly more challenging for attackers to penetrate the system and mitigates the effects of potential vulnerabilities in any single defense measure.

In contrast, approaches that may prioritize simplicity and speed could overlook critical security needs, while focusing solely on cost-efficiency might not allocate sufficient resources to protect against vulnerabilities. Additionally, isolation of systems, while beneficial in certain contexts, does not encompass the comprehensive strategy of interconnecting and layering defenses that "diversity of defense" advocates. Therefore, the correct choice encapsulates the essence of a robust and resilient security posture through the integration of various protective measures.