What does the principle of "defense in depth" focus on?

The principle of "defense in depth" focuses on employing multiple layers of security controls to protect an organization's assets, data, and systems. This strategy recognizes that no single security measure is entirely foolproof; therefore, implementing various overlapping layers enhances overall security. By combining different types of controls—such as physical security, technical defenses, and administrative policies—an organization increases its resilience against various attack vectors.

This approach helps ensure that even if one layer is compromised, additional layers remain to provide protection, allowing for a more robust security posture against potential breaches. Each layer can address different threats and reduce vulnerabilities, ultimately building a more comprehensive defense. The concept is crucial in cybersecurity, as it acknowledges the complexity and evolving nature of threats that organizations face, making it essential to have a multifaceted strategy for protection.