Which option is false regarding the security-in-depth approach?

The concept of security-in-depth is designed to provide multiple layers of protection, ensuring that if one security measure fails, others continue to safeguard assets. The approach recognizes that no single security control is sufficient on its own and that a combination of various types of security controls (including physical barriers, alarms, surveillance, and access controls) is essential to create a robust security posture. This layered strategy is pivotal in addressing a wide array of threats and vulnerabilities.

However, the idea that security-in-depth guarantees complete elimination of security risks is false. While implementing multiple layers significantly reduces the likelihood of successful attacks and enhances the overall security environment, it cannot completely eliminate all risks. There will always be some level of inherent risk that remains, regardless of the security measures in place. Effective risk management involves understanding and accepting that while we can mitigate risks, we cannot eliminate them entirely. This is fundamental to any security strategy.