To which areas does Defense in Depth apply?

Defense in Depth is a security strategy that involves implementing multiple layers of security controls throughout an information system to protect sensitive data and ensure comprehensive security. By applying this approach, organizations can address potential vulnerabilities at different levels, which includes physical, logical, and procedural controls.

The concept is based on the understanding that no single control is sufficient to secure an entire system, as different types of threats may require different forms of defense. Physical controls might include security guards and locks, while logical controls could involve firewalls and encryption. Procedural controls encompass policies and training aimed at guiding employee behavior.

Thus, the correct response indicates that Defense in Depth spans both physical and logical controls, reinforcing the idea that varied layers of defense create a more robust overall security posture. This versatility enables organizations to mitigate risks more effectively across multiple facets of their operations.