What does the term "layered security" refer to?

The term "layered security" refers to employing multiple security measures to create a comprehensive defense against threats. This approach is effective because it does not rely on a single security control; instead, it combines various layers of security that can include physical barriers, technology-based solutions, policies, and employee training. By layering these measures, organizations can significantly enhance their ability to detect, prevent, and respond to security incidents.

For instance, a layered security strategy may include physical locks, surveillance cameras, access control systems, cybersecurity protocols, and employee awareness training. If one layer is compromised, the others remain in place to help protect the organization. This concept is fundamental in creating a robust security posture that addresses multiple vectors of risk.

Other options listed, such as training staff in various skills or implementing different communication channels, do not directly address the concept of security measures and their layered implementation. Similarly, conducting frequent safety drills is valuable for preparedness but does not encompass the broader strategy of layered security.